Recent advances in single-carrier frequency-domain equalization and distributed antenna network

Authors:
F. Adachi;K. Takeda;T. Obara;T. Yamamoto;H. Matsuda
Affiliations:
Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan;Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan;Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan;Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan;Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
Venue:
ICICS'09 Proceedings of the 7th international conference on Information, communications and signal processing
Year:
2009

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Abstract

In the future wireless communication systems, the broadband wireless technology which enables Giga-bps class data services is demanded. Broadband wireless channels become extremely frequency-selective and cause severe inter-symbol interference (ISI). Furthermore, the average received signal power changes in a random manner because of the shadowing and path losses according to the movement of a mobile terminal (MT). Accordingly, the transmission performance severely degrades. Development of some advanced equalization and networking is necessary to overcome the performance degradation. Among them, promising are the frequency-domain equalization (FDE) and distributed antenna network (DAN). The former takes advantage of channel frequency-selectivity to obtain the frequency-diversity gain. In DAN, a group of distributed antennas serve each user to mitigate the negative impact of shadowing and path losses. This article will introduce the recent advances in FDE and DAN for the broadband single-carrier (SC) transmissions.