An efficient QR decomposition design for MIMO systems

Jing Shiun Lin, Yin Tsung Hwang, Po Han Chu, Ming-Der Shieh, Shih Hao Fang

研究成果: Conference contribution

4 引文 斯高帕斯(Scopus)

摘要

Multiple-input multiple-output (MIMO) techniques have been widely used in various wireless communication systems these days. QR factorization is a fundamental module yet computationally intensive used in many MIMO detection schemes. In this paper, a complex-valued QR factorization (CQRF) scheme realized via a sequence of real-value Givens rotations is first presented. An efficient CQRF design using coordinate rotation digital computer (CORDIC) modules is next developed. The design features a highly parallel architecture to support high throughput operations. One CQRF can be obtained in every 8 clock cycles. To reduce the circuit complexity, a pipelined CORDIC structure is also applied. The implementation results in TSMC 0.18-μm CMOS process indicate that the proposed design can achieve a throughput rate of 25MCQRFs per second while consuming only 103.7k gates in circuit complexity. Performance evaluation based on a composite index consisting of area and throughput rate also shows the advantages of the proposed design against other similar works.

原文English
主出版物標題ISCAS 2012 - 2012 IEEE International Symposium on Circuits and Systems
頁面1508-1511
頁數4
DOIs
出版狀態Published - 2012
事件2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 - Seoul, Korea, Republic of
持續時間: 2012 五月 202012 五月 23

Other

Other2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012
國家Korea, Republic of
城市Seoul
期間12-05-2012-05-23

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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