Title :
Channel capacity improvement by means of two-dimensional RAKE for DS/CDMA systems
Author :
Inoue, Takashi ; Karasawa, Yoshio
Author_Institution :
ATR Adaptive Commun. Res. Labs., Japan
Abstract :
The reverse-link channel capacity of a two-dimensional RAKE (2D-RAKE) reception scheme under a multipath fading environment is evaluated by computer simulation by applying a wideband propagation channel model. The feasibility of the proposed scheme is also discussed. The channel capacity is improved in proportion to the number of antenna elements, and the degradation of the achievable channel capacity is dramatically reduced by increasing the interval between antenna elements, especially when the delay spread of a propagation channel is small compared with the chip time of the spread signal
Keywords :
array signal processing; channel capacity; code division multiple access; delays; direction-of-arrival estimation; fading; land mobile radio; linear antenna arrays; multibeam antennas; multipath channels; radio links; radiowave propagation; spread spectrum communication; 2D-RAKE reception; DS/CDMA systems; antenna elements; chip time; computer simulation; delay spread; land mobile radio; linear array antenna; multibeam digital beamforming array; multipath fading; reverse-link channel capacity; spread signal; two-dimensional RAKE; wideband propagation channel model; Antenna arrays; Antennas and propagation; Channel capacity; Directive antennas; Fading; Linear antenna arrays; Multiaccess communication; Receiving antennas; Spatial resolution; Wideband;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.683689
