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Some UEP Concepts in Coding and Physical Transport 编码和物理传输中的一些UEP概念
2007 IEEE Sarnoff Symposium Pub Date : 2007-04-01 DOI: 10.1109/SARNOF.2007.4567353
W. Henkel, N. von Deetzen, K. Hassan, L. Sassatelli, D. Declercq
{"title":"Some UEP Concepts in Coding and Physical Transport","authors":"W. Henkel, N. von Deetzen, K. Hassan, L. Sassatelli, D. Declercq","doi":"10.1109/SARNOF.2007.4567353","DOIUrl":"https://doi.org/10.1109/SARNOF.2007.4567353","url":null,"abstract":"Unequal error protection is the key to future transport of multimedia data. The paper presents an overview of some new approaches realizing UEP properties in physical transport, especially multicarrier modulation, or with LDPC and turbo codes. For multicarrier modulation, a UEP bit-loading method is described allowing for an arbitrary number of classes, arbitrary SNR margins between the classes and arbitrary number of bits per class. In turbo coding, pruning, as a counterpart of puncturing is presented for more flexible bit-rate adaptations. Pruning is also the tool that leads to a construction approach for check-irregular LDPC codes with UEP properties.","PeriodicalId":293243,"journal":{"name":"2007 IEEE Sarnoff Symposium","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114955596","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: 9
On the suitability of Bruun’s FFT algorithm for software defined radio 软件无线电中Bruun FFT算法的适用性研究
2007 IEEE Sarnoff Symposium Pub Date : 2007-04-01 DOI: 10.1109/SARNOF.2007.4567334
S. Mittal, Zafar Ali Khan, M. B. Srinivas
{"title":"On the suitability of Bruun’s FFT algorithm for software defined radio","authors":"S. Mittal, Zafar Ali Khan, M. B. Srinivas","doi":"10.1109/SARNOF.2007.4567334","DOIUrl":"https://doi.org/10.1109/SARNOF.2007.4567334","url":null,"abstract":"Fast Fourier Transform (FFT) is the most basic and essential part of Software Defined Radio (SDR). Therefore, designing regular, reconfigurable, modular and low hardware complexity FFT computation block is very important. A single FFT block should be configurable for varying length FFT computation and also for computation of different transforms like DCT, DST etc. In this paper, the authors analyze implementation complexity and Noise to Signal Ratio (NSR) of Bruunpsilas FFT w.r.t. classical FFT for SDR. It is shown that, Bruunpsilas algorithm for FFT computation is ideally suited for SDR and should be used in preference over any classical FFT architecture for most practical cases.","PeriodicalId":293243,"journal":{"name":"2007 IEEE Sarnoff Symposium","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123851885","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
Terminal-oriented solutions for seamless service delivery via heterogeneous radio access networks 面向终端的解决方案，通过异构无线接入网络实现无缝服务交付
2007 IEEE Sarnoff Symposium Pub Date : 2007-04-01 DOI: 10.1109/SARNOF.2007.4567364
S. Murphy, Mohammed Atiquzzaman, J. Fitzpatrick, J. Murphy
{"title":"Terminal-oriented solutions for seamless service delivery via heterogeneous radio access networks","authors":"S. Murphy, Mohammed Atiquzzaman, J. Fitzpatrick, J. Murphy","doi":"10.1109/SARNOF.2007.4567364","DOIUrl":"https://doi.org/10.1109/SARNOF.2007.4567364","url":null,"abstract":"In this paper, options for providing seamless service delivery to mobile terminals via heterogeneous radio access networks are considered. Despite its current popularity, the Mobile IP solution for mobility management of mobile hosts is discounted due to problems associated with introducing the required network infrastructure and poor handover performance. Rather, the solution described here comprises of a number of key technologies working together. More specifically, the paper argues that the most appropriate solution comprises of the following: adaptive applications, an abstraction layer between application and transport layer, an intelligent transport layer with multi-homing and multi-path support and a means to obtain current state information about each of the available access networks. While work has been ongoing on each of these individual components little has been done to address how they can all be integrated and consider how they may perform in the context of different radio access technologies, potentially operated by different entities. This paper attempts to address some of these issues.","PeriodicalId":293243,"journal":{"name":"2007 IEEE Sarnoff Symposium","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124347014","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
SC/FDE combined with MIMO: An improved out of band power and performance via tamed frequency modulation SC/FDE结合MIMO:通过驯服的频率调制，提高了带外功率和性能
2007 IEEE Sarnoff Symposium Pub Date : 2007-04-01 DOI: 10.1109/SARNOF.2007.4567313
T. Buzid, M. Huemer, S. Reinhardt
{"title":"SC/FDE combined with MIMO: An improved out of band power and performance via tamed frequency modulation","authors":"T. Buzid, M. Huemer, S. Reinhardt","doi":"10.1109/SARNOF.2007.4567313","DOIUrl":"https://doi.org/10.1109/SARNOF.2007.4567313","url":null,"abstract":"Correlative minimum shift keying (MSK), a second order polynomial modulation scheme known as tamed frequency modulation (TFM), is a constant envelope type of modulation with a perfect peak to average power ratio (PAPR), besides the property of low out of band power. We apply the linearized TFM to the single carrier transmission with frequency domain equalization (SC/FDE) concept. We then obtain a power and bandwidth efficient broadband technique for the SISO and MIMO multipath channels. Finally we present simulation results.","PeriodicalId":293243,"journal":{"name":"2007 IEEE Sarnoff Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121099789","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: 3
Construction of a DSL-MIMO channel model for evaluation of FEXT cancellation systems in VDSL2 VDSL2中用于评价ext对消系统的DSL-MIMO信道模型的构建
2007 IEEE Sarnoff Symposium Pub Date : 2007-04-01 DOI: 10.1109/SARNOF.2007.4567335
M. Sorbara, P. Duvaut, F. Shmulyian, S. Singh, A. Mahadevan
{"title":"Construction of a DSL-MIMO channel model for evaluation of FEXT cancellation systems in VDSL2","authors":"M. Sorbara, P. Duvaut, F. Shmulyian, S. Singh, A. Mahadevan","doi":"10.1109/SARNOF.2007.4567335","DOIUrl":"https://doi.org/10.1109/SARNOF.2007.4567335","url":null,"abstract":"Of growing interest in the field of VDSL2 transmission is the evaluation of algorithms for improved performance using far-end crosstalk (FEXT) cancellation pre-coding. In order to perform fair evaluations of different algorithms, it is necessary to define a multiple input multiple output (MIMO) channel model that realistically represents the nature of the FEXT coupling dispersion that may be encountered in a multi-pair cable. This paper describes a general method for generating a MIMO channel model for a twisted wire pair cable that is extended from the currently defined 1% worst case FEXT coupling model. This extended model defines varying levels of FEXT cross-coupling values across the channel matrix and still preserves the 1% worst case crosstalk levels. Based on cable measurements, we determine a best fit probability density function to model the FEXT coupling dispersion; then for an example 25-pair 26-gauge (AWG) cable, we define four reference 25times25 channel matrices that contain varying degrees of channel dispersion: specifically, we define a 25times25 dispersion matrix for each of dasiazero,psila dasialow,psila dasiamedium,psila and dasiahighpsila dispersion. Finally, we compute rate vs. reach performance of FEXT Cancellation Pre-coding with cancellation of 5 dominant disturbers for each channel matrix.","PeriodicalId":293243,"journal":{"name":"2007 IEEE Sarnoff Symposium","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127323172","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: 51
Modified antenna effective gain in multiple-cluster 3D channel model 多簇三维信道模型中改进的天线有效增益
2007 IEEE Sarnoff Symposium Pub Date : 2007-04-01 DOI: 10.1109/SARNOF.2007.4567311
Xueyuan Zhao, D.C.K. Lee, Z. Pan, N. Boubaker, R. Cheng
{"title":"Modified antenna effective gain in multiple-cluster 3D channel model","authors":"Xueyuan Zhao, D.C.K. Lee, Z. Pan, N. Boubaker, R. Cheng","doi":"10.1109/SARNOF.2007.4567311","DOIUrl":"https://doi.org/10.1109/SARNOF.2007.4567311","url":null,"abstract":"This paper investigates the effective gain of antennas in indoor channels. A metric called instantaneous effective gain is proposed, and a multiple-cluster 3D channel model is used to facilitate the proposed antenna effective gain. In the multiple-cluster channel model, Laplacian and double exponential distribution are utilized to model azimuth and elevation signal power distribution respectively, and multiple clusters are built to describe the instantaneous channel power distribution. The modified antenna effective gain and multiple-cluster channel model are suitable for evaluating the antennas in antenna switching system. By using the proposed metric and the channel model, it is also found by simulation that the elevation mismatch of antenna patterns with indoor channels reduces the effective gain in the antenna switching system.","PeriodicalId":293243,"journal":{"name":"2007 IEEE Sarnoff Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129378957","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: 2
Optimal power allocation in space and time in MISO Rayleigh fading channels with peak to average power ratio constraint 峰值平均功率比约束下MISO瑞利衰落信道的时间和空间最优功率分配
2007 IEEE Sarnoff Symposium Pub Date : 2007-04-01 DOI: 10.1109/SARNOF.2007.4567393
P. Reddy, V.V.M Niranjan Kumar, M. Khan, M. Srinivas
{"title":"Optimal power allocation in space and time in MISO Rayleigh fading channels with peak to average power ratio constraint","authors":"P. Reddy, V.V.M Niranjan Kumar, M. Khan, M. Srinivas","doi":"10.1109/SARNOF.2007.4567393","DOIUrl":"https://doi.org/10.1109/SARNOF.2007.4567393","url":null,"abstract":"In this paper we derive optimal power allocation scheme that minimizes bit error rate (BER) while satisfying the average power constraint and peak to average power ratio (PAPR) constraint (which translates to minimizing the PAPR). The power allocation is done in space and time for multiple-input single-output (MISO) systems over Rayleigh flat fading channels assuming perfect channel state information (CSI) is available both at the transmitter and receiver. This power allocation achieves exponential diversity while satisfying the PAPR constraint.","PeriodicalId":293243,"journal":{"name":"2007 IEEE Sarnoff Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129481115","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
Space-time adaptive processing in ESPAR antenna and adaptive arrays in CDMA systems; A comparison ESPAR天线的空时自适应处理和CDMA系统中的自适应阵列一个比较
2007 IEEE Sarnoff Symposium Pub Date : 2007-04-01 DOI: 10.1109/SARNOF.2007.4567310
A. Baharlouei, B. Abolhassani, H. Oraizi
{"title":"Space-time adaptive processing in ESPAR antenna and adaptive arrays in CDMA systems; A comparison","authors":"A. Baharlouei, B. Abolhassani, H. Oraizi","doi":"10.1109/SARNOF.2007.4567310","DOIUrl":"https://doi.org/10.1109/SARNOF.2007.4567310","url":null,"abstract":"In this paper the performance of the ESPAR (electronically steerable passive array radiator) antenna in suppressing both the co-channel and inter-symbol interferences is compared with the conventional circular and linear arrays. For this purpose, the STAP (space-time adaptive processing) is implemented in both arrays with equal elements. Simulation results show that when the pattern of the ESPAR antenna in not formed, the conventional arrays have about 4.5 dB better performances in their cost function. However, by forming the pattern of the ESPAR, its cost function is comparable or even better than the linear and circular arrays. Since the ESPAR antenna has only one active element, its implementation cost is very low in comparison with the linear and circular arrays whose all elements are active. Therefore, the ESPAR can be a frugal replacement for conventional arrays with the same performance.","PeriodicalId":293243,"journal":{"name":"2007 IEEE Sarnoff Symposium","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130149304","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: 0
Effects of multiple access interference and PMD on optical code lightpaths 多址干扰和PMD对光码光路的影响
2007 IEEE Sarnoff Symposium Pub Date : 2007-04-01 DOI: 10.1109/SARNOF.2007.4567381
F. Durand, F. R. Barbosa, M. Abbade, E. Moschim
{"title":"Effects of multiple access interference and PMD on optical code lightpaths","authors":"F. Durand, F. R. Barbosa, M. Abbade, E. Moschim","doi":"10.1109/SARNOF.2007.4567381","DOIUrl":"https://doi.org/10.1109/SARNOF.2007.4567381","url":null,"abstract":"In this work we investigate the effects of multiple access interference (MAI) and polarization mode dispersion (PMD) in optical code division multiplexing (OCDM) lightpaths. These paths are determined by the data encoding with non-coherent optical orthogonal codes (OOC), using a sequence inversion keying (SIK) optical correlator system. Our results show the impact of MAI effects and PMD constraint on the packet error rate, which depends on OOC parameters like weight and length. These parameters in turn depend on MAI and PMD effects. The results obtained can be used as input parameters for the design of OOC in virtual code/ wavelength path (VOCP/ VWP) routed networks.","PeriodicalId":293243,"journal":{"name":"2007 IEEE Sarnoff Symposium","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123205219","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: 9
Miniature wide-band microstrip patch antennas for GSM applications : A parametric study and optimum design GSM应用的微型宽带微带贴片天线:参数化研究与优化设计
2007 IEEE Sarnoff Symposium Pub Date : 2007-04-01 DOI: 10.1109/SARNOF.2007.4567368
A. Nandgaonkar, S. Deosarkar, S. Shirbahadurkar
{"title":"Miniature wide-band microstrip patch antennas for GSM applications : A parametric study and optimum design","authors":"A. Nandgaonkar, S. Deosarkar, S. Shirbahadurkar","doi":"10.1109/SARNOF.2007.4567368","DOIUrl":"https://doi.org/10.1109/SARNOF.2007.4567368","url":null,"abstract":"Microstrip Antennas (MSAs) consist of a metallic radiating patch on one side of thin dielectric substrate and other side is ground plane. Most important advantages of MSAs are low profile, light weight and compatibility with integrated circuit technology. MSAs are used in mobile communication, satellite communication, radar, direct broadcasting, global positioning systems and remote sensing. The major limitations of microstrip antennas are their narrow impedance bandwidth, small gain and low power handling capability. In this paper, we designed full and half U slot MSAs (0.8 to 1.4 GHz) with shorting wall used between non radiating edge of MSAs and ground plane. The behavior of full and half structure is similar with slight change in center frequency. The feed is optimized in such a way to get the maximum bandwidth. We have studied effect of thickness of substrate, length, width and dielectric constant on the performance of full U slot MSAs. The U-slot and Half U-slot MSAs with shorting wall has been simulated in IE3D and experimental results are verified on Agilent VNA E5062A.","PeriodicalId":293243,"journal":{"name":"2007 IEEE Sarnoff Symposium","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123694965","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: 0
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