2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)最新文献_第9页

Analysis of the simulated aggregate interference in random ad-hoc networks 随机ad-hoc网络模拟聚合干扰分析

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941776

Yiftach Richter, I. Bergel

引用次数: 9

Joint TOA/AOA estimation of IR-UWB signals in the presence of multiuser interference 多用户干扰下IR-UWB信号的TOA/AOA联合估计

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941925

Fang Shang, B. Champagne, I. Psaromiligkos

引用次数: 10

Unifying viewpoints on distributed asynchronous optimization for MISO interference channels MISO干扰信道分布式异步优化的统一观点

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941496

Stefan Wesemann, W. Rave, G. Fettweis

引用次数: 0

Sparse channel estimation including the impact of the transceiver filters with application to OFDM 稀疏信道估计包括收发滤波器的影响与应用于OFDM

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941835

O. Barbu, N. L. Pedersen, Carles Navarro i Manchon, G. Monghal, C. Rom, B. Fleury

{"title":"Sparse channel estimation including the impact of the transceiver filters with application to OFDM","authors":"O. Barbu, N. L. Pedersen, Carles Navarro i Manchon, G. Monghal, C. Rom, B. Fleury","doi":"10.1109/SPAWC.2014.6941835","DOIUrl":"https://doi.org/10.1109/SPAWC.2014.6941835","url":null,"abstract":"Traditionally, the dictionary matrices used in sparse wireless channel estimation have been based on the discrete Fourier transform, following the assumption that the channel frequency response (CFR) can be approximated as a linear combination of a small number of multipath components, each one being contributed by a specific propagation path. In practical communication systems, however, the channel response experienced by the receiver includes additional effects to those induced by the propagation channel. This composite channel embodies, in particular, the impact of the transmit (shaping) and receive (demodulation) filters. Hence, the assumption of the CFR being sparse in the canonical Fourier dictionary may no longer hold. In this work, we derive a signal model and subsequently a novel dictionary matrix for sparse estimation that account for the impact of transceiver filters. Numerical results obtained in an OFDM transmission scenario demonstrate the superior accuracy of a sparse estimator that uses our proposed dictionary rather than the classical Fourier dictionary, and its robustness against a mismatch in the assumed transmit filter characteristics.","PeriodicalId":420837,"journal":{"name":"2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"17 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":"114253875","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

Sparse beamforming design for network MIMO system with per-base-station backhaul constraints 基于每个基站回程约束的网络MIMO系统稀疏波束形成设计

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941658

Binbin Dai, Wei Yu

{"title":"Sparse beamforming design for network MIMO system with per-base-station backhaul constraints","authors":"Binbin Dai, Wei Yu","doi":"10.1109/SPAWC.2014.6941658","DOIUrl":"https://doi.org/10.1109/SPAWC.2014.6941658","url":null,"abstract":"This paper considers the joint beamforming and clustering design problem in a downlink network multiple-input multiple-output (MIMO) setup, where the base-stations (BSs) are connected to a central processor with rate-limited backhaul links. We formulate the problem as that of devising a sparse beamforming vector across the BSs for each user, where the nonzero beamforming entries correspond to that user's serving BSs. Differing from the previous works, this paper explicitly formulates the per-BS backhaul constraints in the network utility maximization framework. In contrast to the traditional utility maximization problem with transmit power constraint only, the additional backhaul constraints result in a discrete ℓ0-norm formulation, which makes the problem more challenging. Motivated by the compressive sensing literature, we propose to iteratively approximate the per-BS backhaul constraints using a reweighted ℓ1-norm technique and reformulate the backhaul constraints as weighted per-BS power constraints. This allows us to solve the weighted sum rate maximization problem through a generalized weighted minimum mean square error (WMMSE) approach. To reduce the computational complexity of the proposed algorithm within each iteration, we propose two additional techniques, iterative link removal and iterative user pool shrinking, which dynamically decrease the potential BS cluster size and user scheduling pool. Numerical results show that the proposed algorithm can significantly improve the system throughput as compared to the naive BS clustering strategy based on the channel strength.","PeriodicalId":420837,"journal":{"name":"2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"1 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":"134151223","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

Turbo-coded single-carrier faster-than-Nyquist transmission 涡轮编码单载波比奈奎斯特传输快

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941377

Mohammad Javad Abdoli, Ming Jia, Jianglei Ma

引用次数: 3

Graph matching for crowdsourced data in mobile sensor networks 移动传感器网络中众包数据的图匹配

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941828

Shervin Shahidi, S. Valaee

引用次数: 6

On uplink-downlink sum-MSE duality of multi-hop MIMO relay channel 多跳MIMO中继信道的上行-下行和- mse二象性研究

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941634

A. Cirik, Muhammad R. A. Khandaker, Y. Rong, Y. Hua

引用次数: 1

Dirty paper coding with partial channel state information 带有部分信道状态信息的脏纸编码

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941718

I. Bergel, D. Yellin, S. Shamai

引用次数: 5

A cell breathing approach in green heterogeneous networks 绿色异构网络中的细胞呼吸方法

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941734

R. T. Duran, Paschalis Tsiaflakis, L. Vandendorpe, M. Moonen

{"title":"A cell breathing approach in green heterogeneous networks","authors":"R. T. Duran, Paschalis Tsiaflakis, L. Vandendorpe, M. Moonen","doi":"10.1109/SPAWC.2014.6941734","DOIUrl":"https://doi.org/10.1109/SPAWC.2014.6941734","url":null,"abstract":"Femto base stations constitute a promising solution to cope with the dramatic increase in mobile data traffic, but they also contribute to increase the network power consumption. Traditionally, full power transmissions are used to satisfy the users' data rate demands, causing interference to neighboring cells. Cell breathing can reduce the total transmit power by adjusting the cell size to the traffic load, hence limiting interference. However, it requires full knowledge of the channel conditions and power allocation strategies of neighboring cells. Its implementation becomes more challenging in broadband heterogeneous networks due to the channel frequency selectivity, the power difference between base station types, and the required network coordination. Therefore, we propose a cell breathing approach for green heterogeneous networks, referred to as path loss-based cell breathing (PL-CB), which uses only path loss information to limit the interference caused to neighboring cells. It achieves a higher energy efficiency and a larger achievable rate region than other state-of-the-art techniques with negligible degradation with respect to the approach with full knowledge of the channel and transmit powers of neighboring cells.","PeriodicalId":420837,"journal":{"name":"2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"4 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":"133997666","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