Multi-mode Sorted QR Decomposition for 4x4 and 8x8 Single-user/Multi-user MIMO Precoding

被引：0
|
作者：
Chen, Chi-Mao [1 ]
Lin, Chih-Hsiang [1 ]
Tsai, Pei-Yun [1 ]
机构：
[1] Natl Cent Univ, Dept Elect Engn, Jhongli, Taiwan
来源：
2015 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS) | 2015年
关键词：
MIMO precoding; multi-user MIMO; QR decomposition; sorting; systolic array;
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：
This paper presents a configurable multi-mode QR decomposition (QRD) processor. It supports 4x4 and 8x8 QRD with multi-layer sorting for single-user MIMO precoding. Besides, it can perform block-based sorting for multi-user MIMO precoding. Both forward mode for decomposition and backward mode for signal precoding are provided. This QRD processor is designed in pipelined systolic array. An in-place strategy with pointer-based control mechanism is proposed for sorting buffers, which reduces 42.3% D flip-flops. The proposed processor implemented in 90nm CMOS technology can generate 9.45MQRD/s for decomposing 8x8 channel matrix with sorting, and outperforms the related works in terms of throughput and hardware efficiency.
引用
收藏
页码：2980 / 2983
页数：4
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