2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)最新文献_第3页

Fastest-known near-ML decoding of golden codes 已知最快的接近ml解码黄金密码

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941455

S. Kundu, Shubham Chamadia, D. Pados, S. Batalama

引用次数: 2

Modulation and Coding Classification for Adaptive Power Control in 5G Cognitive Communications 5G认知通信中自适应功率控制的调制与编码分类

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941505

Anestis Tsakmalis, S. Chatzinotas, B. Ottersten

{"title":"Modulation and Coding Classification for Adaptive Power Control in 5G Cognitive Communications","authors":"Anestis Tsakmalis, S. Chatzinotas, B. Ottersten","doi":"10.1109/SPAWC.2014.6941505","DOIUrl":"https://doi.org/10.1109/SPAWC.2014.6941505","url":null,"abstract":"A key concept suggested for 5G networks is spectrum sharing within the context of Cognitive Communications (CC). This efficient spectrum usage has been explored intensively the last years. In this paper, a mechanism is proposed to allow a cognitive user, also called Secondary User (SU), to access the frequency band of a Primary User (PU) operating based on an Adaptive Coding and Modulation (ACM) protocol. The Spectrum Sensing (SS) technique used considers Higher Order Statistical (HOS) features of the signal and log-likelihood ratios (LLRs) of the code syndromes in order to constantly monitor the modulation and coding scheme (MODCOD) of the PU respectively. Once the Modulation and Coding Classification (MCC) is completed, a Power Control (PC) scheme is enabled. The SU can attempt to access the frequency band of the PU and increase its transmitting power until it causes a change of the PU's transmission scheme due to interference. When the SU detects the change of the PU's MODCOD, then it reduces its transmitting power to a lower level so as to regulate the induced interference. The proposed blind Adaptive Power Control (APC) algorithm converges without any interference channel information to the aforementioned interference limit and guarantees the preservation of the PU link throughput.","PeriodicalId":420837,"journal":{"name":"2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117155820","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: 35

Energy efficiency analysis of rank-1 Ricean fading MIMO channels 1级稻米衰落MIMO信道的能量效率分析

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941742

Jingya Li, M. Matthaiou, Shi Jin, T. Svensson

引用次数: 4

Power allocation for distortion minimization in distributed estimation with security constraints 带安全约束的分布式估计中失真最小化的功率分配

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941664

Xiaoxi Guo, Alex S. C. Leong, S. Dey

{"title":"Power allocation for distortion minimization in distributed estimation with security constraints","authors":"Xiaoxi Guo, Alex S. C. Leong, S. Dey","doi":"10.1109/SPAWC.2014.6941664","DOIUrl":"https://doi.org/10.1109/SPAWC.2014.6941664","url":null,"abstract":"In this paper we explore the distortion performance of distributed estimation schemes in wireless sensor networks (WSNs) in the presence of an eavesdropper. The sensors use an uncoded amplify and forward scheme to transmit their observations to the fusion center (FC), which at the same time can be overheard by the eavesdropper. Both the FC and the eavesdropper reconstruct a minimum mean squared error (MMSE) estimate of the physical quantity observed. In this paper, we address the problem of transmit power allocation for system performance optimization subject to a total average power constraint on the sensors and a security constraint on the eavesdropper. In the case of full channel state information (CSI) the proposed scheme allows the sensors to adapt their transmission strategy based on the instantaneous channel gains of both the FC and the eavesdropper. In the partial CSI case, transmit power is allocated only according to the FC instantaneous channel gains and statistical channel gains of the eavesdropper. Numerical results illustrate the performance of the power allocation algorithms.","PeriodicalId":420837,"journal":{"name":"2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125746109","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: 4

Beamspace MIMO prototype for low-complexity Gigabit/s wireless communication 波束空间MIMO原型低复杂性千兆/秒无线通信

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941332

J. Brady, P. Thomas, Dave Virgilio, A. Sayeed

引用次数: 9

MIMO soft demodulation via semidefinite relaxation: Efficient dual-scaling implementation and performance analysis 半定松弛的MIMO软解调:高效双标度实现与性能分析

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941313

Mahsa Salmani, T. Davidson

引用次数: 0

Achievable SNR and rate regions for OFDM-based asynchronous two-way relay networks 基于ofdm的异步双向中继网络可实现的信噪比和速率区域

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941326

J. Mirzaee, S. Shahbazpanahi

引用次数: 4

Simple switch-based relay selection for amplify-and-forward cooperative diversity on rayleigh fading channels 基于开关的瑞利衰落信道放大转发合作分集的简单中继选择

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941641

Y. Chau, M. Al-Harbawi

引用次数: 5

Joint pairing and power allocation optimization in multichannel MABC-based two-way relaying 基于mabc的多路双向中继联合配对与功率分配优化

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941689

Min-Yao Chang, Min Dong, S. Shahbazpanahi

{"title":"Joint pairing and power allocation optimization in multichannel MABC-based two-way relaying","authors":"Min-Yao Chang, Min Dong, S. Shahbazpanahi","doi":"10.1109/SPAWC.2014.6941689","DOIUrl":"https://doi.org/10.1109/SPAWC.2014.6941689","url":null,"abstract":"We consider two-way amplify-and-forward relaying in a multichannel system with two end nodes and a single relay, using a two-slot multi-access broadcast (MABC) relaying strategy. We investigate the problem of joint subchannel pairing and power allocation to maximize the achievable sum-rate in the network, under an individual power budgets at each node. To solve this challenging joint optimization problem, an iterative approach is proposed to decompose the problem into pairing optimization and joint power allocation optimization, and solve them iteratively. For the joint power allocation at the relay and the two end nodes, we propose another iterative optimization procedure to optimize the power at the two end nodes and at the relay iteratively. By using different forms of optimization parameters, the sum-rate maximization problem turns out to be convex and the optimal solutions can be obtained for each subproblem. The simulation performance demonstrates the gain of joint optimization approach over other pairing-only or power-allocation-only optimization approaches.","PeriodicalId":420837,"journal":{"name":"2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128818529","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

Tradeoff analysis of partial zero-forcing beamforming in large random spectrum sharing networks 大型随机频谱共享网络中部分零强迫波束形成的权衡分析

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941320

Ran Cai, P. Ching, T. Davidson

{"title":"Tradeoff analysis of partial zero-forcing beamforming in large random spectrum sharing networks","authors":"Ran Cai, P. Ching, T. Davidson","doi":"10.1109/SPAWC.2014.6941320","DOIUrl":"https://doi.org/10.1109/SPAWC.2014.6941320","url":null,"abstract":"In wireless networks, the availability of multiple transmitting antennas can be exploited in several ways. One way is to reduce the interference to unintended receivers by placing beamforming nulls in those directions, as is done in zero-forcing beamforming. Another is to boost the received signal strength at the desired receiver using “matched” transmit beamforming. This work studies a partial zero-forcing beamforming scheme that combines these two traditional transmission schemes, and examines its performance gain in large random spectrum sharing networks. Specifically, beamforming vectors are designed to null the aggregate interference towards a number of selected primary receivers and to boost the received signal strength at the intended receiver. Considering Poisson distributed users and Rayleigh fading channels, the statistical characterizations of signal and interference are analyzed and the optimal number of nulled receivers is discussed. The simulation results show that by employing partial zero-forcing beamforming with a judiciously chosen number of nulls, the permissible density of secondary transmitters can be maximized while protecting the successful transmission probabilities of individual networks.","PeriodicalId":420837,"journal":{"name":"2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116987034","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