The Multi carrier (MC) Transmission Technique was devised in the 1960`s for voice band data transmission. Today there are two principles of multi carrier applications, one is for the high speed digital subscriber loop and the other is for the broadcasting of digital audio and video signals. In this work the use of MC for high-bit rate wireless applications is considered. The bit error rate (BER) performance of MC utilizing differentially encoded 16 level amplitude phase shift keying (16 DE-APSK) and differentially coherent demodulation in frequency flat fading channels is considered via the use of Monte Carlo simulation methods. The BER results are presented for MC utilizing (16 DE-APSK) modulation and with MC utilizing differentially encoded 16 level phase shift keying (16 DE-PSK) modulation and MC utilizing differentially encoded 16 quadrature amplitude modulation (16 QAM) for frequency flat Rician channel in the presence of additive white Gaussian noise (AWGN). The performance of MC is also compared with equivalent single (16 DE-APSK) carrier systems.
Ibrahim A.Z. Qatawneh and Ibrahim M. Rida , 2003. Error Rate Analysis of Multi-carrier Modulation Using Differentially Encoded and Detected 16 DE-APSK under Rician Fading Channels. Journal of Applied Sciences, 3: 400-409.