BEAMFORMING FOR INTERFERENCE MITIGATION AND ITS IMPLEMENTATION ON AN SDR BASEBAND PROCESSOR

被引：0
|
作者：
Krdu, Adrian [1 ,2 ]
Lebrun, Yann [2 ]
Ahmad, Ubaid [2 ]
Pollin, Sofie [2 ]
Agrawal, Prashant [2 ]
Li, Min [2 ]
机构：
[1] Univ Svizzera Italiana, Adv Learning & Res Inst, Lugano, Switzerland
[2] IMEC VZW, B-3001 Louvain, Belgium
来源：
2011 IEEE WORKSHOP ON SIGNAL PROCESSING SYSTEMS (SIPS) | 2011年
关键词：
LTE; Fixed-point arithmetic; CGRA; Software Defined Radio; Beamforming;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We present the first implementation of a distributed beamforming algorithm for interference mitigation on an SDR baseband processor. Co-channel interference (CCI) is becoming a major source of impairments in wireless communications and distributed beamforming is a promising technique to mitigate its negative impact. However, such schemes are challenging to implement in practical scenarios due to their complexity and synchronization requirements. In this paper, we report on implementation of a suboptimal, yet efficient, beamforming scheme for CCI mitigation and present the complexity modeling and algorithm transformations for achieving numerically stability. We also present the fixed-point quantization and the proper mapping on a parallel programmable baseband architecture aimed for software-defined radio (SDR). We optimize this algorithm for a coarse grained reconfigurable array (CGRA) processor and evaluate it in the context of the LTE standard.
引用
收藏
页码：192 / 197
页数：6
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