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Design and Implementation of Baseband Modem Receiver for MIMO-OFDM Based WLANs  

Jang, Soo-Hyun (School of Electronics, Telecommunication and Computer Eng., Korea Aviation University)
Roh, Jae-Young (School of Electronics, Telecommunication and Computer Eng., Korea Aviation University)
Jung, Yun-Ho (School of Electronics, Telecommunication and Computer Eng., Korea Aviation University)
Publication Information
Journal of Advanced Navigation Technology / v.14, no.3, 2010 , pp. 328-335 More about this Journal
Abstract
In this paper, an efficient algorithm and area-efficient hardware architecture have been proposed for $2{\times}2$ MIMO-OFDM based WLAN baseband modem with two transmit and two receive antennas. To enhance the performance of the receiver, the efficient timing synchronization algorithm and symbol detector based on MML algorithm are presented. Also, by sharing the hardware block with multi-stage pipeline structure and using the complex multiplier based on polar-coordinate, the complexity of the proposed architecture is dramatically decreased. The proposed area-efficient hardware design was designed in hardware description language (HDL) and synthesized to gate-level circuits using 0.13um CMOS standard cell library. As a result, the complexity of the proposed modem receiver is reduced by 56% over the conventional architecture.
Keywords
MIMO; ML; OFDM; Symbol Detector; Timing Synchronization;
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