Low complexity multi-point 4-channel FFT processor for IEEE 802.11n MIMO-OFDM WLAN system

Byungcheol Kang, Jaeseok Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

This paper proposes an energy and area efficient structure and hardware architecture of FFT processor for 4×4 MIMO-OFDM WLAN systems with four transmit and four receive antennas. Since the basic scheme of MIMO-OFDM system is multiple data transmission, conventional FFT processor for SISO-OFDM system is not suitable for MIMO-OFDM systems. The proposed FFT processor has multi-channel structure to support multiple data path. Multi-channel structure enables to processor several FFT operation with just single processor. Also, by the mixed radix algorithm, the number of non-trivial multiplications of the FFT processor is decreased. The proposed FFT processor reduces the logic gates about 25% over a 4-channel R4MDC FFT processor. Therefore, the proposed FFT processor will contribute improvement to the low power and low complexity design of MIMO-OFDM systems, since the MIMO-OFDM FFT processor is one of the largest modules in the systems, in which the low complexity design is a very important issue.

Original languageEnglish
Title of host publicationProceedings of the 2012 International Conference in Green and Ubiquitous Technology, GUT 2012
Pages94-97
Number of pages4
DOIs
Publication statusPublished - 2012 Dec 12
Event2012 International Conference in Green and Ubiquitous Technology, GUT 2012 - Bandung, Indonesia
Duration: 2012 Jul 72012 Jul 8

Publication series

NameProceedings of the 2012 International Conference in Green and Ubiquitous Technology, GUT 2012

Other

Other2012 International Conference in Green and Ubiquitous Technology, GUT 2012
CountryIndonesia
CityBandung
Period12/7/712/7/8

All Science Journal Classification (ASJC) codes

  • Software

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    Kang, B., & Kim, J. (2012). Low complexity multi-point 4-channel FFT processor for IEEE 802.11n MIMO-OFDM WLAN system. In Proceedings of the 2012 International Conference in Green and Ubiquitous Technology, GUT 2012 (pp. 94-97). [6344198] (Proceedings of the 2012 International Conference in Green and Ubiquitous Technology, GUT 2012). https://doi.org/10.1109/GUT.2012.6344198