TY - GEN
T1 - Low complexity multi-point 4-channel FFT processor for IEEE 802.11n MIMO-OFDM WLAN system
AU - Kang, Byungcheol
AU - Kim, Jaeseok
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
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U2 - 10.1109/GUT.2012.6344198
DO - 10.1109/GUT.2012.6344198
M3 - Conference contribution
AN - SCOPUS:84870724534
SN - 9781457721724
T3 - Proceedings of the 2012 International Conference in Green and Ubiquitous Technology, GUT 2012
SP - 94
EP - 97
BT - Proceedings of the 2012 International Conference in Green and Ubiquitous Technology, GUT 2012
T2 - 2012 International Conference in Green and Ubiquitous Technology, GUT 2012
Y2 - 7 July 2012 through 8 July 2012
ER -