Title :
Design of MAI-free MC-CDMA systems over frequency-selective fading channels via codeword selection
Author :
Tsai, Shang-Ho ; Lin, Yuan-Pei ; Kuo, C. C Jay
Author_Institution :
Dept. of Electr. Eng., Univ. of Southern California, CA, USA
Abstract :
A scheme to eliminate completely the multiaccess interference (MAI) of the multicarrier code division multiple access (MC-CDMA) system in a frequency-selective fading environment using codeword selection is proposed. We show that, if the CDMA codewords are chosen to be a proper subset of the Hadamard-Walsh codes, the MC-CDMA system can be MAI-free so that the implementational complexity of the transceiver can be greatly reduced. This MAI-free property is analyzed theoretically and demonstrated via simulation results.
Keywords :
Hadamard codes; code division multiple access; computational complexity; fading channels; interference suppression; radiofrequency interference; transceivers; Hadamard-Walsh codes; MAI-free MC-CDMA systems; codeword selection; frequency-selective fading channels; multiaccess interference elimination; transceiver complexity; Error correction; Error correction codes; Frequency conversion; Frequency division multiaccess; Frequency-selective fading channels; Interference elimination; Multiaccess communication; Multicarrier code division multiple access; Multiple access interference; Transceivers;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on
Print_ISBN :
0-7803-8874-7
DOI :
10.1109/ICASSP.2005.1415849
