IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
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Multi-input R23SDF-kR for efficient FFT processor in MIMO-OFDM systems
Seung-yerl LeeDong-sun KimKyu-yeul WangByung-soo KimDuck-jin Chung
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Keywords: MIMO-OFDM, FFT, multi-input, SDF, MDC
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2009 Volume 6 Issue 24 Pages 1702-1707

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Abstract

In this paper, we propose a multi-input R23SDF-kR architecture for efficient FFT processor in MIMO-OFDM systems with n-antennas at the transmitter and receiver. The proposed architecture is based on R23SDF for low complexity and it is operated to k times clock rate for multi-stream processing like MDC pipeline method in MIMO-OFDM systems. The proposed multi-input R23SDF-kR processor reduces the hardware complexity with similar or less computation in comparison of conventional MDC methods. Comparison results show that the proposed R23SDF-4R and R23SDF-8R reduce the area about 58% and 76% compared with the most area-efficient methods at 4 × 4 and 8 × 8MIMO channels, respectively.

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© 2009 by The Institute of Electronics, Information and Communication Engineers
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