Title :
A new block detection receiver for noncoherent orthogonal CDMA system
Author :
Li, Bin ; Tong, Wen ; Wang, Rui
Author_Institution :
Wireless Technol. Lab., Nortel Networks, Nepean, Ont., Canada
Abstract :
A new block detection receiver is presented for noncoherent orthogonal CDMA (such as the CDMA IS-95A reverse link). This new receiver uses multiple Hadamard (or Walsh) codes for joint detection instead of using a single Walsh code as conventional receivers do. The simulation results show that the new block detection receiver is significantly better than the conventional non-block detection receivers in both additive white Gaussian noise and flat Rayleigh fading channels. A reduced-complexity algorithm for the block detection is also presented with significant complexity reduction and negligible performance degradation
Keywords :
AWGN channels; Hadamard codes; Rayleigh channels; code division multiple access; digital radio; error statistics; land mobile radio; multiuser channels; radio receivers; signal detection; BER; IS-95A reverse link; additive white Gaussian noise channel; block detection receiver; flat Rayleigh fading channel; joint detection; mobile digital communications; multiple Hadamard codes; multiple Walsh codes; nonblock detection receivers; noncoherent orthogonal CDMA system; performance degradation; reduced-complexity algorithm; simulation results; Additive white noise; Convolution; Convolutional codes; Correlators; Decoding; Error correction; Error correction codes; Fading; Multiaccess communication; Viterbi algorithm;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853739
