Title :
Performance of DS/CDMA with M-ary orthogonal modulation cell site antenna arrays
Author :
Naguib, Ayman F. ; Paulraj, Arogyaswami
Author_Institution :
Inf. Syst. Lab., Stanford Univ., CA, USA
Abstract :
Code division multiple access (CDMA) has been shown to offer higher capacity than the existing FDMA or TDMA systems. Since no pilot is used in the reverse link for power efficiency considerations, M-ary orthogonal modulation with noncoherent reception is a suitable modulation technique. Spatial processing with base-station antenna arrays was previously proposed for improving coverage and increasing system capacity. The present authors study the performance of a base-station antenna arrays receiver structure for M-ary orthogonal modulation and noncoherent RAKE combining in the presence of multipath
Keywords :
antenna arrays; code division multiple access; land mobile radio; modulation; multipath channels; pseudonoise codes; radio receivers; spread spectrum communication; DS/CDMA; M-ary orthogonal modulation cell site antenna arrays; base-station antenna arrays; base-station antenna arrays receiver structure; code division multiple access; coverage; modulation technique; multipath; noncoherent RAKE combining; noncoherent reception; performance; power efficiency considerations; spatial processing; system capacity; Antenna arrays; Base stations; Differential quadrature phase shift keying; Frequency division multiaccess; Multiaccess communication; RAKE receivers; RF signals; Receiving antennas; System performance; Time division multiple access;
Conference_Titel :
Communications, 1995. ICC '95 Seattle, 'Gateway to Globalization', 1995 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2486-2
DOI :
10.1109/ICC.1995.524194
