Adaptive Equalization with Dual Diversity-Combining

Kouei MISAIZU  Takashi MATSUOKA  Hiroshi OHNISHI  Ryuji KOHNO  Hideki IMAI  

IEICE TRANSACTIONS on Communications   Vol.E76-B   No.2   pp.131-138
Publication Date: 1993/02/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Land Mobile/Portable Propagation)
adaptive equalizer,  dual diversity-combining,  digital mobile radio communication,  multipath fading channel,  

Full Text: PDF>>
Buy this Article

This paper proposes and investigates an adaptive equalizer with diversity-combining over a multipath fading channel. It consists of two space-diversity antennas and a Ts/2-spaced decision-feedback-equalizer (DFE). Received signals from the two antennas are alternatively switched and fed into the feed forward-filter of DFE. We call this structure a Switched Input Combining Equalizer with diversity-combining (SICE). By using an SICE, the receiver structure for combining diversity equalization can be simplified, because it needs only two receiver sections up to IF BPF. The bit error rate (BER) performance of SICE was evaluated by both computer simulation and experiment over a multipath fading channel. We experimentally confirmed the excellent BER performance, around 1% of BER over a multipath fading channel at 160Hz of maximum doppler fading frequency. Therefore, the proposed SICE is applicable to highly reliable transmission in the 1.5-GHz-band mobile radio.