Title :
Transmitter-receiver design in multicarrier CDMA communications
Author :
Hujun Yin ; Liu, Hui
Author_Institution :
Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA
Abstract :
We consider the design of multiuser receivers for multicarrier direct-sequence CDMA communications over fading channels. We present a class of spreading codes that enables the simple despreading-combining (DC) receiver to achieve the performance of an optimum multiuser linear receiver. These codes are shown to be optimum for independent fading channels under the code design criterion derived. Simulation results are provided to demonstrate the significant gains in performance and simplicity due to the proposed techniques.
Keywords :
code division multiple access; fading channels; least mean squares methods; multiuser channels; quadrature phase shift keying; radio receivers; radio transmitters; spread spectrum communication; DS-CDMA; MMSE receiver; QPSK; Walsh codes; code design; despreading-combining receiver; independent fading channels; multicarrier CDMA communications; multiuser receivers; optimum multiuser linear receiver; performance; simulation results; spreading codes; transmitter-receiver design; Baseband; Fading; Frequency; Modulation coding; Multiaccess communication; Multicarrier code division multiple access; Narrowband; Performance analysis; Performance gain; Statistical analysis;
Conference_Titel :
Signals, Systems & Computers, 1998. Conference Record of the Thirty-Second Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-5148-7
DOI :
10.1109/ACSSC.1998.751638
