2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)最新文献_第6页

Iterative MMSE receivers for multiuser MIMO cooperative systems 多用户MIMO合作系统的迭代MMSE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.2010.5671020

G. Kraidy, P. Salvo Rossi

引用次数: 4

Distributed power allocation for next-generation cognitive wireless devices 下一代认知无线设备的分布式功率分配

2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5671040

A. Morell, J. Vicario, G. Seco-Granados

引用次数: 0

Complexity reduction in BICM-ID systems through selective log-likelihood ratio updates 通过选择性对数似然比更新降低BICM-ID系统的复杂性

2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5670980

S. Schwandter, Z. Naja, P. Duhamel, G. Matz

引用次数: 3

Blind nonzero delay MMSE equalizer for SIMO fir systems SIMO fir系统的盲非零延迟MMSE均衡器

2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5670966

A. Kammoun, K. Abed-Meraim, S. Affes

引用次数: 1

Impact of channel estimation error upon sum-rate in amplify-and-forward two-way relaying systems 扩前双向中继系统中信道估计误差对和速率的影响

2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5670875

Yupeng Jia, A. Vosoughi

{"title":"Impact of channel estimation error upon sum-rate in amplify-and-forward two-way relaying systems","authors":"Yupeng Jia, A. Vosoughi","doi":"10.1109/SPAWC.2010.5670875","DOIUrl":"https://doi.org/10.1109/SPAWC.2010.5670875","url":null,"abstract":"In this work, we consider the amplify-and-forward (AF) two-way relay network where the two terminals TA, TB exchange their information through a relay node TR in a bi-directional manner and study the impact of the training-based channel estimation upon individual and sum-rate of the two users. We assume that in the multiple-access (MA) phase TA, TB initiate transmission by sending their training symbols to TR, and in the broadcasting (BC) phase TR initiates transmission by sending its own training symbol, followed by an amplified version of the signal received in MA phase. This training symbol facilitates TA and TB to perform self-interference suppression and to estimate the cascaded overall relay channel required for recovery of the data of interest. We derive lower bounds on the training-based individual rates and sum-rate of the two users and investigate the impact of channel estimation errors upon the sum-rate lower bound. Under the total transmit power constraint, we search for the optimal power allocation among the three nodes and optimal power allocation between data and training such that the sum-rate lower bound is maximized. Furthermore, we discuss the relationship between the optimal solutions and the relay location.","PeriodicalId":436215,"journal":{"name":"2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"102 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":"121485257","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

Optimal Downlink Beamforming and resource allocation in MIMO-OFDMA systems MIMO-OFDMA系统中最优下行波束形成和资源分配

2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5671043

N. Hassan, M. Assaad

引用次数: 3

Sparse regularized total least squares for sensing applications 传感应用中的稀疏正则化总最小二乘

2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5671061

Hao Zhu, G. Leus, G. Giannakis

{"title":"Sparse regularized total least squares for sensing applications","authors":"Hao Zhu, G. Leus, G. Giannakis","doi":"10.1109/SPAWC.2010.5671061","DOIUrl":"https://doi.org/10.1109/SPAWC.2010.5671061","url":null,"abstract":"This paper focuses on solving sparse reconstruction problems where we have noise in both the observations and the dictionary. Such problems appear for instance in compressive sampling applications where the compression matrix is not exactly known due to hardware non-idealities. But it also has merits in sensing applications, where the atoms of the dictionary are used to describe a continuous field (frequency, space, angle, …). Since there are only a finite number of atoms, they can only approximately represent the field, unless we allow the atoms to move, which can be done by modeling them as noisy. In most works on sparse reconstruction, only the observations are considered noisy, leading to problems of the least squares (LS) type with some kind of sparse regularization. In this paper, we also assume a noisy dictionary and we try to combat both noise terms by casting the problem into a sparse regularized total least squares (SRTLS) framework. To solve it, we derive an alternating descent algorithm that converges to a stationary point at least. Our algorithm is tested on some illustrative sensing problems.","PeriodicalId":436215,"journal":{"name":"2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"22 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":"115565883","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: 21

Reducing out-of-band radiation of OFDM-based cognitive radios 减少基于ofdm的认知无线电的带外辐射

2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5670975

Liwen Yu, B. Rao, L. Milstein, J. Proakis

{"title":"Reducing out-of-band radiation of OFDM-based cognitive radios","authors":"Liwen Yu, B. Rao, L. Milstein, J. Proakis","doi":"10.1109/SPAWC.2010.5670975","DOIUrl":"https://doi.org/10.1109/SPAWC.2010.5670975","url":null,"abstract":"In an OFDM-based cognitive radio system, mutual interference among the users needs to be managed in order to enable spectrum sharing while protecting the licensed users. However, a conventional OFDM waveform suffers from high out-of-band radiation (OBR) and may cause harmful interference to other users in the system. In this work, we develop a transmit-windowing-based approach that reduces OBR by allowing for a controlled amount of Inter-Carrier Interference (ICI) in the OFDM system. Unlike previous work on transmit windowing, this approach does not require any additional time-frequency resources and shapes the carrier spectrum in a limited and deliberate manner. In particular, we examine the use of Hamming and Hanning transmit-windowed OFDM. The windowing operation at the transmitter consists of simple time-domain multiplications and is implemented in combination with an efficient fast Fourier transform (FFT) algorithm. We show that transmit-windowed OFDM has the potential to reduce OBR and improve spectral efficiency, and can be considered as an attractive alternative modulation waveform for cognitive radios.","PeriodicalId":436215,"journal":{"name":"2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"7 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":"130950882","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

Robustness of blind subspace based techniques using ℓp quasi-norms 基于盲子空间的拟模鲁棒性

2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5670867

A. Kammoun, Abdeljalil Aissa El Bey, K. Abed-Meraim, S. Affes

引用次数: 14

Cross-layer frame synchronization for H.264 video over WIMAX 基于WIMAX的H.264视频跨层帧同步

2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI: 10.1109/SPAWC.2010.5670989

M. Martini, C. Hewage

引用次数: 6