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Fast Frequency-Hopped MFSK with Multi-Antenna Transmission Diversity System for Indoor Radio Channel
Jun PENG Masao NAKAGAWA
IEICE TRANSACTIONS on Communications
Publication Date: 1996/09/25
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Personal Communications)
Category: Indoor Wireless Systems
indoor radio channel, flat Rayleigh fading, fast ferquency-hopping, multi-antenna, transmission diversity,
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ISM band has been approved for spread spectrum communication in radio LAN in Japan since December 1992. This frequency band extends from 2.474 GHz to 2.5 GHz with 26 MHz bandwide. In an indoor environment, the maximum observed delay spread is 100-200 ns in a room, it is too short to generate a selective fading, thus flat fading conditions are often observed. Serve as an alleviation, we propose a new system of multi-antenna in base station (BS) and single antenna in mobile station (MS). In this system, MS should have a simple structure for its small size and energy-saving.