Complexity-Efficient Enumeration Techniques for Soft-Input, Soft-Output Sphere Decoding

被引：12
|
作者：
Nikitopoulos, Konstantinos [1 ]
Zhang, Dan [1 ]
Lai, I-Wei [1 ]
Ascheid, Gerd [1 ]
机构：
[1] Rhein Westfal TH Aachen, Inst Integrated Signal Proc Syst, D-52074 Aachen, Germany
来源：
IEEE COMMUNICATIONS LETTERS | 2010年 / 14卷 / 04期
关键词：
Multiple-input multiple-output; soft sphere decoding; iterative processing; ALGORITHMS;
D O I：
10.1109/LCOMM.2010.04.092230
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this paper two complexity efficient soft sphere-decoder modifications are proposed for computing the max-log LLR values in iterative MIMO systems, which avoid the costly, typically needed, full enumeration and sorting (FES) procedure during the tree traversal without compromising the max-log performance. It is shown that despite the resulting increase in the number of expanded nodes, they can be more computationally efficient than the typical soft sphere decoders by avoiding the unnecessary complexity of FES.
引用
收藏
页码：312 / 314
页数：3
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