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

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5 Author(s)
Ohgane, T. ; Commun. Res. Lab., Minist. of Posts & Telecommun., Tokyo, Japan ; Matsuzawa, N. ; Shimura, T. ; Mizuno, M.
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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 Eb/N0, compared with that of a single antenna system, of 17.5 to 22 dB at a BER of 1.0×10-2 in a frequency-selective fading channel

Published in:

Vehicular Technology, IEEE Transactions on  (Volume:42 ,  Issue: 4 )

Date of Publication:

Nov 1993

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