Title :
BER performance of CMA adaptive array for a GMSK/TDMA system-a description of measurements in central Tokyo
Author :
Ohgane, Takeo ; Sasaoka, Hedeichi ; Matsuzawa, Naoto ; Shimura, Takanori
Author_Institution :
Minist. of Posts & Telecommun. of Japan, Tokyo, Japan
Abstract :
The bit-error-rate (BER) performance of a constant modulus algorithm adaptive array for a Gaussian-filtered minimum shift keying/time division multiple access (GMSK/TDMA) system is described. The measurement was carried out in central and suburban Tokyo. The system uses a modulation data rate of 256 kb/s. In order to reduce the effect of multipath fading, an adaptive array of four antenna elements is implemented using a digital beam forming concept. The improvement in input power, compared with that of a single antenna system, reaches 16 dB in suburban Tokyo and 19 to 23 dB in central Tokyo at a BER of 1.0×10-2. Moreover, in central Tokyo, the irreducible error seen in the single antenna system is removed by the adaptive array
Keywords :
antenna phased arrays; fading; minimum shift keying; mobile radio systems; time division multiple access; 256 kbit/s; BER performance; GMSK/TDMA system; Gaussian-filtered minimum shift keying/time division multiple access; antenna elements; bit-error-rate; central Tokyo; constant modulus algorithm adaptive array; digital beam forming; input power; irreducible error; mobile radio; multipath fading; suburban Tokyo; Adaptive arrays; Adaptive equalizers; Antenna arrays; Bit error rate; Digital modulation; Fading; Laboratories; Receiving antennas; Time division multiple access; Wideband;
Conference_Titel :
Vehicular Technology Conference, 1992, IEEE 42nd
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-0673-2
DOI :
10.1109/VETEC.1992.245255
