Title :
Low-rate orthogonal convolutional coded DS-CDMA using non-coherent multi-carrier modulation over the AWGN and Rayleigh faded channel
Author :
Maxey, J.J. ; Ormondroyd, R.F.
Author_Institution :
Sch. of Electron. & Electr. Eng., Bath Univ., UK
Abstract :
An analysis of the performance of low-rate orthogonal convolutional codes (LROCC) is presented in multiple-access systems operating under Rayleigh fading and AWGN. These results are used to obtain the performance of a noncoherent orthogonal frequency division multiplexing (OFDM) design employing LROCC coding in a Rayleigh fading environment with interference from “other-user” noise and AWGN. Considerable improvement in the spectrum efficiency of this new implementation over coherent DS-CDMA is found
Keywords :
Gaussian channels; Gaussian noise; Rayleigh channels; cellular radio; channel coding; code division multiple access; convolutional codes; differential phase shift keying; fading; frequency division multiplexing; land mobile radio; radiofrequency interference; spread spectrum communication; white noise; AWGN channel; DPSK modulation; DS-CDMA; OFDM; Rayleigh fading channel; cellular radio; direct sequence code division multiple access; interference; low-rate orthogonal convolutional codes; mobile communication; noncoherent multi-carrier modulation; noncoherent orthogonal frequency division multiplexing; spectrum efficiency; AWGN; Additive white noise; Convolutional codes; Gaussian noise; Interference; Multiaccess communication; OFDM; Performance analysis; Rayleigh channels; Working environment noise;
Conference_Titel :
Spread Spectrum Techniques and Applications Proceedings, 1996., IEEE 4th International Symposium on
Conference_Location :
Mainz
Print_ISBN :
0-7803-3567-8
DOI :
10.1109/ISSSTA.1996.563192
