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2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)最新文献

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Multiple-antenna Transmitted-Reference communication systems performance in presence of narrowband interference 窄带干扰下多天线发射参考通信系统的性能
2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5671000
P. Chargé, Guillaume Fumat, P. Acco
{"title":"Multiple-antenna Transmitted-Reference communication systems performance in presence of narrowband interference","authors":"P. Chargé, Guillaume Fumat, P. Acco","doi":"10.1109/SPAWC.2010.5671000","DOIUrl":"https://doi.org/10.1109/SPAWC.2010.5671000","url":null,"abstract":"The aim of this paper is to show the improvement of Transmitted-Reference (TR) communication systems when an antenna array is used at the receiver side. A generalized model of communication waveforms is involved so that this study is valid for any kind of carrier waveforms, as well as sinusoidal signals as in conventional narrowband communications, UWB impulses or even chaotic waveforms. Thus a BER performance expression of such a TR-based system is provided in presence of a narrowband interferer.","PeriodicalId":436215,"journal":{"name":"2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125373290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Closed-form cramér-rao lower bounds of the Ricean K-factor estimates from I/Q data 从I/Q数据估计的Ricean k因子的闭式cramimrs -rao下界
2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5671003
Fatma Jemni, Wassima Bchimi, Inès Bousnina, A. Samet
{"title":"Closed-form cramér-rao lower bounds of the Ricean K-factor estimates from I/Q data","authors":"Fatma Jemni, Wassima Bchimi, Inès Bousnina, A. Samet","doi":"10.1109/SPAWC.2010.5671003","DOIUrl":"https://doi.org/10.1109/SPAWC.2010.5671003","url":null,"abstract":"Closed-form CRLBs are derived for estimates of the Ricean K-factor from I/Q data. Indeed, the CRLBs evaluate effectively the estimators and indicate the best approach to adopt. The CRLBs are derived in two cases. In the first case, only the Ricean K-factor is assumed unknown, while in the second case the Line-Of-Sight (LOS) phase, Angle of Arrival (AoA), Doppler shift and specular Doppler frequency shift are assumed unknown as well. We compare the obtained analytical expressions with numerical CRLBs. Simulation results show a perfect corroboration between analytical and numerical CRLBs.","PeriodicalId":436215,"journal":{"name":"2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"961 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127033609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Outage performance of reactive cooperation in Nakagami-m fading channels Nakagami-m衰落信道无功合作的中断性能
2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5671077
M. Benjillali, Mohamed-Slim Alouini
{"title":"Outage performance of reactive cooperation in Nakagami-m fading channels","authors":"M. Benjillali, Mohamed-Slim Alouini","doi":"10.1109/SPAWC.2010.5671077","DOIUrl":"https://doi.org/10.1109/SPAWC.2010.5671077","url":null,"abstract":"In this paper, we investigate the outage performance of Decode-and-Forward with reactive relaying in dual-hop cooperative Nakagami-m fading links. The destination, based on the unique knowledge of local second hop channel state information, selects the best relay to increase the chances of cooperation when the direct link is also available. After deriving the exact distribution of the variables of interest, the outage probability of the system—with and without the direct link—is obtained in closed-form, and the ∈-outage capacity is derived in the particular case where the channel model is reduced to a Rayleigh fading. Simulation results confirm the accuracy of our analysis for a large selection of system and fading parameters.","PeriodicalId":436215,"journal":{"name":"2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115058405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
A new multi-user receiver for PUCCH LTE format 1 一种新的PUCCH LTE格式1的多用户接收机
2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5671023
Icaro L. da Silva, A. D. de Almeida, F. Cavalcanti, R. Baldemair, S. Falahati
{"title":"A new multi-user receiver for PUCCH LTE format 1","authors":"Icaro L. da Silva, A. D. de Almeida, F. Cavalcanti, R. Baldemair, S. Falahati","doi":"10.1109/SPAWC.2010.5671023","DOIUrl":"https://doi.org/10.1109/SPAWC.2010.5671023","url":null,"abstract":"In 3rd. Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, when no resources has been assigned in the uplink to a given UE (User Equipment), the ACK/NACK associated with the received packets are conveyed back to the LTE base station through the so-called Physical Uplink Control Channel (PUCCH). In PUCCH, the data streams transmitted by multiple UEs are multiplexed in the frequency-domain with the aid of spreading codes. However, in multi-cell scenarios, the presence of Inter-Cell Interference (ICI) arising from the lack of code orthogonality severely limits receiver performance. In this paper, we propose a new multi-user receiver for PUCCH LTE operating in a cell-cooperative setting. Using the fact that the received signal in PUCCH signaling follows a constrained tensor model, a multiuser receiver based on an iterative joint channel estimation and symbol detection is proposed. The uniqueness conditions of this particular tensor model allows us to derive the maximum number of terminals that can be simultaneously detected at the LTE base station. Simulation results show the remarkable performance gains of the proposed receiver compared to the conventional time-frequency decorrelator based receiver.","PeriodicalId":436215,"journal":{"name":"2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122409126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Block-orthogonal space-time codes with decoding complexity reduction 降低译码复杂度的块正交空时码
2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5671091
T. Ren, Y. Guan, C. Yuen, E. Zhang
{"title":"Block-orthogonal space-time codes with decoding complexity reduction","authors":"T. Ren, Y. Guan, C. Yuen, E. Zhang","doi":"10.1109/SPAWC.2010.5671091","DOIUrl":"https://doi.org/10.1109/SPAWC.2010.5671091","url":null,"abstract":"Conventional approaches to high-rate space-time codes (STC) design focus on achieving maximum diversity and spatial multiplexing gains, hence they always have high decoding complexity. In this paper, we propose and construct a new class of STC, called block-orthogonal STC (BOSTC), which has a simplified ML (maximum likelihood) or near-ML decoding structure. We demonstrate the tradeoff between decoding complexity and decoding performance. Results show that due to the decoding complexity reduction, our proposed BOSTC can outperform the previously known codes when keeping the decoding complexity to be the same.","PeriodicalId":436215,"journal":{"name":"2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114249517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
On the effects of carrier frequency offset on cyclic prefix based OFDM and filter bank based multicarrier systems 载波频偏对基于循环前缀OFDM和基于滤波器组的多载波系统的影响
2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5670999
Qing Bai, J. Nossek
{"title":"On the effects of carrier frequency offset on cyclic prefix based OFDM and filter bank based multicarrier systems","authors":"Qing Bai, J. Nossek","doi":"10.1109/SPAWC.2010.5670999","DOIUrl":"https://doi.org/10.1109/SPAWC.2010.5670999","url":null,"abstract":"Being sensitive to carrier frequency offset (CFO) is known to be one of the main drawbacks of multicarrier systems. In this paper, the effects of CFO on a filter bank based multicarrier system (FBMC) in a multipath fading channel are discussed, where an ideal root-raised cosine (RRC) filter with roll-off factor 1 is used as the prototype filter which enables analytical derivations of the interference caused by the CFO. Based on these results, an approximation on the SNR degradation with very small CFO is also given. Numerical experiments as well as Monte Carlo simulations are done to verify the analysis and the accuracy of the approximation in FBMC systems. A comparison with the SNR degradations in cyclic prefix based orthogonal frequency division multiplexing (CP-OFDM) systems has indicated an advantage of FBMC systems as being more robust to frequency misalignments.","PeriodicalId":436215,"journal":{"name":"2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125606101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 28
A sparse EM algorithm for blind and semi-blind identification of doubly selective OFDM channels 一种用于双选择性OFDM信道盲与半盲识别的稀疏EM算法
2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5670864
S. Barembruch, É. Moulines, A. Scaglione
{"title":"A sparse EM algorithm for blind and semi-blind identification of doubly selective OFDM channels","authors":"S. Barembruch, É. Moulines, A. Scaglione","doi":"10.1109/SPAWC.2010.5670864","DOIUrl":"https://doi.org/10.1109/SPAWC.2010.5670864","url":null,"abstract":"In recent years many sparse estimation methods, also known as compressed sensing, have been developed for channel identification problems in digital communications. However, all these methods presume the transmitted sequence of symbols to be known at the receiver, i.e. in form of a training sequence. We consider blind identification of the channel based on maximum likelihood (ML) estimation via the EM algorithm incorporating a sparsity constraint in the maximization step. We apply this algorithm to an OFDM transmission over a doubly-selective multipath channel with strong Doppler and delay spread.","PeriodicalId":436215,"journal":{"name":"2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125749530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
The marginalized square-root Quadrature Kalman Filter 边缘平方根正交卡尔曼滤波器
2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5670900
P. Closas, C. Fernández-Prades
{"title":"The marginalized square-root Quadrature Kalman Filter","authors":"P. Closas, C. Fernández-Prades","doi":"10.1109/SPAWC.2010.5670900","DOIUrl":"https://doi.org/10.1109/SPAWC.2010.5670900","url":null,"abstract":"Bayesian filtering appears in many signal processing problems, reason which has attracted the attention of many researchers to develop efficient algorithms, yet computationally affordable. Ranging from Kalman Filter (KF) to particle filters, there is a plethora of alternatives depending on model assumptions. We focus our interest into a recently developed algorithm known as the square-root Quadrature Kalman Filter (SQKF). Under the Gaussian assumption, the SQKF is seen to optimally tackle arbitrary nonlinearities by resorting to the Gauss-Hermite quadrature rules. However, its complexity increases exponentially with the state-space dimension. In this paper we study a marginalization procedure to alleviate this problem which roughly consists in taking advantage of the linear substructures of the model. A target tracking application is used to validate the proposed algorithm. The results exhibit a reasonable performance of the proposed algorithm, while drastically reducing the computational complexity when compared to state-of-the-art algorithms.","PeriodicalId":436215,"journal":{"name":"2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132319367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Energy detectors for sparse signals 稀疏信号的能量检测器
2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5671026
S. Gishkori, G. Leus, H. Deliç
{"title":"Energy detectors for sparse signals","authors":"S. Gishkori, G. Leus, H. Deliç","doi":"10.1109/SPAWC.2010.5671026","DOIUrl":"https://doi.org/10.1109/SPAWC.2010.5671026","url":null,"abstract":"In this paper, compressive sampling (CS) based energy detectors are developed for sparse communication signals, namely, pulse-position modulation (PPM) and frequency shift-keying (FSK) signals so as to reduce the complexity and sampling rate at the receiver. We focus on noncoherent detection, thereby avoiding the channel estimation step. Exact bit error probability (BEP) expressions for receivers sampling at the Nyquist rate are derived to ascertain the performance of CS-based energy detectors. Simulation results provide insight into the choice of measurement matrices for a practical implementation of CS.","PeriodicalId":436215,"journal":{"name":"2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130225122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Optimal resource allocation techniques for MIMO-OFDMA based cognitive radio networks using integer linear programming 基于整数线性规划的MIMO-OFDMA认知无线网络资源优化分配技术
2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5670885
Y. Rahulamathavan, K. Cumanan, S. Lambotharan
{"title":"Optimal resource allocation techniques for MIMO-OFDMA based cognitive radio networks using integer linear programming","authors":"Y. Rahulamathavan, K. Cumanan, S. Lambotharan","doi":"10.1109/SPAWC.2010.5670885","DOIUrl":"https://doi.org/10.1109/SPAWC.2010.5670885","url":null,"abstract":"We propose an adaptive resource allocation algorithm for a multiple-input multiple-output (MIMO) orthogonal frequency division multiple access (OFDMA) based downlink cognitive radio network (CRN). The CRN has multiple secondary users (SUs) coexisting with multiple primary users (PUs). The aim is to maximize the total data throughput of SUs while ensuring interference leakage to PUs is below a threshold and quality of services (QoS) for SUs such as data rates and bit error rate (BER) are met. The algorithm optimally allocates radio resources such as subcarrier, spatial beams, powers and bits to each user using an integer linear programming (ILP) framework. The performance of the algorithm has been evaluated using simulation results.","PeriodicalId":436215,"journal":{"name":"2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132621017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
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