Title :
Effects of multipath diversity on adaptive QAM in frequency selective Rayleigh fading channels
Author :
Kim, Jooeung ; Kim, Inkyoung ; Ro, Sangmin ; Hong, Daesik ; Kang, Changeon
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
We derive the average bit error rate (BER) and the average throughput for adaptive quadrature amplitude modulation (AQAM) with constant transmit power over frequency selective Rayleigh fading channels. Based on these derived BER and throughput expressions, we go on to investigate the effect of multipath diversity on AQAM using two BER constraints.
Keywords :
Rayleigh channels; adaptive modulation; code division multiple access; diversity reception; error statistics; multipath channels; multiuser channels; BER constraints; C-AQAM; CDMA; D-AQAM; adaptive QAM; adaptive quadrature amplitude modulation; average BER; average bit error rate; average throughput; constant transmit power; continuous-rate AQAM; discrete-rate AQAM; frequency selective Rayleigh fading channels; instantaneous BER; multipath diversity; AWGN channels; Bit error rate; Diversity reception; Fading; Frequency diversity; Instruction sets; Multiaccess communication; Multipath channels; Quadrature amplitude modulation; Throughput;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2002.803475
