BER performance of CMA adaptive array for high-speed GMSK mobile communication-a description of measurements in central Tokyo

This paper describes the performance of an adaptive array as a countermeasure to multipath fading for a 256 kbps Gaussian-filtered minimum shift keying (GMSK) mobile communication system operating in the 1.5 GHz band. An adaptive array having four antenna elements is implemented using the digital be...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 1993-11, Vol.42 (4), p.484-490
Main Authors: Ohgane, T., Matsuzawa, N., Shimura, T., Mizuno, M., Sasaoka, H.
Format: Article
Language:English
Subjects:
Adaptive arrays
Antenna arrays
Antenna measurements
Applied sciences
Bit error rate
Delay
Equipments and installations
Exact sciences and technology
Fading
Gaussian processes
Mobile communication
Mobile radiocommunication systems
Pattern analysis
Radiocommunications
Signal analysis
Telecommunications
Telecommunications and information theory
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Summary:This paper describes the performance of an adaptive array as a countermeasure to multipath fading for a 256 kbps Gaussian-filtered minimum shift keying (GMSK) mobile communication system operating in the 1.5 GHz band. An adaptive array having four antenna elements is implemented using the digital beam forming concept. The constant modulus algorithm (CMA) is employed for the adaptation process to ease the implementation. Measurements in central Tokyo of the bit error rate (BER) performance and an array pattern arising in the multipath environment are presented. Analysis of the array pattern confirms that the array succeeds in directing nulls to the delayed signals. BER performance shows an improvement in E/sub b//N/sub 0/, compared with that of a single antenna system, of 17.5 to 22 dB at a BER of 1.0*10/sup -2/ in a frequency-selective fading channel.< >
ISSN:0018-9545
1939-9359
DOI:10.1109/25.260763