Adaptive Guard Symbol Insertion Method for One-Cell Reuse TDMA Cellular Systems

Seiichiro HORIKAWA  Osamu MUTA  Yoshihiko AKAIWA  

IEICE TRANSACTIONS on Communications   Vol.E90-B   No.12   pp.3724-3728
Publication Date: 2007/12/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.12.3724
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
TDMA,  one-cell reuse,  adaptive guard symbol insertion,  co-channel interference suppression,  

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In this paper, we propose an adaptive guard symbol insertion method for one-cell reuse TDMA cellular systems in which co-channel interference is reduced by adaptively selecting the best transmit-pulse waveform with different guard (null-) symbols according to the average error power (AEP) corresponding to signal-to-interference and noise power ratio (SINR), even though the same frequency channel is used at all base stations. Using the proposed system, current TDMA-based systems are readily extensible to one-cell reuse systems, which achieves higher spectrum efficiency. The system capacity is enhanced using the proposed method; moreover, the required qualities such as blocking probability and outage probability are retained.