Title :
A study on a channel allocation scheme with an adaptive array in SDMA
Author :
Ohgane, Takeo ; Ogawa, Yasutaka ; Itoh, Kiyohiko
Author_Institution :
Fac. of Eng., Hokkaido Univ., Sapporo, Japan
Abstract :
This paper describes spatial division multiple access (SDMA) using an adaptive array. A spatial correlation coefficient is proposed as a criterion to determine the possibility of duplicate channel allocation. When the average input SNR is more than 20 dB, the users satisfying a correlation coefficient of less than 0.9 can be accommodated in the same channel in a 2-user SDMA model with a 2-element adaptive array. The blocking rate performance shows that this 2-user SDMA can improve channel efficiency almost twice
Keywords :
adaptive antenna arrays; adaptive signal processing; array signal processing; cochannel interference; coding errors; correlation methods; direction-of-arrival estimation; error statistics; frequency allocation; interference suppression; multi-access systems; space division multiplexing; telecommunication channels; 2-element adaptive array; 2-user SDMA model; BER performance; DOA; average input SNR; blocking rate performance; channel allocation; channel efficiency; cochannel interference; interference suppression; spatial correlation coefficient; spatial division multiple access; Adaptive arrays; Antenna arrays; Base stations; Bit error rate; Channel allocation; Interference suppression; Multiaccess communication; Phased arrays; Radiofrequency interference; Signal detection;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.600424
