Title :
Performance of nonlinearly amplified multicarrier spread spectrum systems in the presence of multipath fading
Author :
Jong, Je-Hong ; Stark, Wayne E.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
We analyze the effect of a nonlinearity on the bit error rate performance of multicarrier spread spectrum (MCSS) systems in the presence of multipath fading. A 5th order polynomial model is used to represent the amplifier amplitude nonlinearities (AM/AM) and a flat Rayleigh fading channel is assumed for each modulated carrier. It is found that for the additive white Gaussian noise and multipath fading channel, the bit error degradation from a nonlinear amplification is not as significant as in the additive white Gaussian noise channel alone
Keywords :
AWGN channels; OFDM modulation; Rayleigh channels; amplitude modulation; demodulators; error statistics; multipath channels; spread spectrum communication; 5th order polynomial model; AM/AM; BER; OFDM; additive white Gaussian noise channel; amplifier amplitude nonlinearities; average bit error probability; bit error degradation; bit error rate performance; demodulator output statistics; flat Rayleigh fading channel; modulated carrier; multipath fading; nonlinearly amplified multicarrier spread spectrum systems; AWGN; Additive white noise; Bit error rate; Fading; Gaussian noise; OFDM modulation; Performance analysis; Random variables; Spread spectrum communication; Transmitters;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686112
