Dual-Mode Space-Temporal Simultaneous Processing Equalizer

Autor: Yoshihiro Ichikawa, Shigeki Obote, Kenichi Kagoshima
Rok vydání: 2005
Předmět:
Zdroj: Wireless Personal Communications. 35:353-364
ISSN: 1572-834X
0929-6212
DOI: 10.1007/s11277-005-7534-7
Popis: A tapped delayed line adaptive array antenna (TDL-AAA) and a space-temporal simultaneous processing equalizer (ST-SPE) are proposed as simple space-temporal equalizers based on minimum mean square error (MMSE) criterion. The ST-SPE has a compact hardware with a small number of taps compared to that of the TDL-AAA. The ST-SPE can reduce the computational complexity of the space-temporal joint equalization and it works effectively under the minimum phase condition such as appeared at line-of-sight (LOS) propagation environments at a high antenna height base station. However the ST-SPE cannot work under a non-minimum phase condition caused under N-LOS (non-line-of-sight). On the other hand, the TDL-AAA whose reference signal is synchronized at the center tap (TDL-AAAC) can work even in the non-minimum phase condition. In this paper, we propose a dual-mode space-temporal simultaneous processing equalizer (Dual-mode ST-SPE) which has a simple configuration and also works in non-minimum phase condition. The Dual-mode ST-SPE can reduce the computational complexity compared to the TDL-AAAC.
Databáze: OpenAIRE
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