標題: A MMSE Joint Feedback Feed-forward Equalizer for FBMC-OQAM Baseband Receiver in the 60 GHz Band
作者: Liu, Chun-Yi
Leong, Edmund Wen Jen
Wu, Chang-Ting
Sie, Meng-Siou
Lopez, Henry
Jen, Chih-Wei
Jou, Shyh-Jye
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: MMSE;MJFFE;FBMC;OFDM;60 GHz;IEEE 802.11ad
公開日期: 1-Dec-2017
摘要: In this paper, a minimum mean square error (MMSE) joint feedback feed-forward equalizer (MJFFE) is proposed to deterministically suppress the inter-symbol interference and inter-carrier interference that arose from the filter bank multi-carrier in a long multipath channel of the 60-GHz indoor wireless transmission. The decision device is discarded in the decision feedback loop to reduce error propagation while at the same time applying the MMSE criterion to prevent over compensation influenced by additive white Gaussian noise. As a result, in an non-line-of-sight (NLOS) channel with 7.65-ns rms delay spread, a 3-tap MJFFE provides 3-dB improvement at the bit error rate (BER) 10(-2) crossing and improve error floor effect at the BER 10(-3) crossing, as compared with the 1-tap zero-forcing equalizer. Furthermore, the proposed equalizer coefficients calculation based on linear convolution for the MJFFE is also presented. The hardware complexity achieves 50% reduction by using several methods including multiplexing, memory sharing, and computation element sharing.
URI: http://dx.doi.org/10.1109/JETCAS.2017.2748565
http://hdl.handle.net/11536/144281
ISSN: 2156-3357
DOI: 10.1109/JETCAS.2017.2748565
期刊: IEEE JOURNAL ON EMERGING AND SELECTED TOPICS IN CIRCUITS AND SYSTEMS
Volume: 7
起始頁: 558
結束頁: 568
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