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Scalable pipeline architecture of MMSE MIMO detector for 4×4 MIMO-OFDM receiver

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3 Author(s)
Yoshizawa, S. ; Grad. Sch. of Inf. Sci. & Technol., Hokkaido Univ., Sapporo, Japan ; Ikeuchi, H. ; Miyanaga, Y.

MIMO-OFDM performs signal detection on subcarrier-by-subcarrier basis and increases its computational complexity. A complete pipeline MMSE detector meeting requirements for a high throughput has been presented in our previous work, which provides real-time processing even for large numbers of subcarriers. However, it requires large circuit scale and tends to be excessive for small numbers of subcarriers. We propose a new scalable architecture to reduce circuit scale by adjusting the number of iterative operations related to OFDM parameters. The designed detector reduces to about 1/2 to 1/7 in circuit area and is superior to the conventional detectors in computation time.

Published in:

Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on

Date of Conference:

May 30 2010-June 2 2010