Title :
Effects of adaptive equalization on the performance of broadband wireless communications
Author :
Semmar, Assia ; Huynh, Huu Tu?? ; Lecours, Michel
Author_Institution :
Radiocommun. & Signal Process. Lab., Laval Univ., Que., Canada
fDate :
6/22/1905 12:00:00 AM
Abstract :
The performance of wireless wideband high data rate indoor communications systems is affected by the channel propagation conditions. In this context, the channel delay profile characteristics constitute a significant constraint by imposing an irreducible error rate which results in a limitation of the transmission rate. We examine the effects of equalization techniques on the performance of broadband wireless communications with CQPSK modulation. Although general in nature, this study is carried out in the context of its application to high data rare wideband transmission at millimeter-wave frequencies. The performance results are based on Monte Carlo simulations with a simplified model of the generated received signal which depend on the power delay profile characteristics. Two power delay profile models are considered: a one sided exponential model and a uniform model. Simulations results show that the relative performance of linear and non-linear equalization techniques strongly depends on the characteristics of the power delay profile model
Keywords :
Monte Carlo methods; adaptive equalisers; broadband networks; decision feedback equalisers; delays; digital simulation; error statistics; fading channels; indoor radio; millimetre wave propagation; multipath channels; quadrature phase shift keying; radio networks; BER performance; CQPSK modulation; DFE; Monte Carlo simulations; adaptive equalization; broadband wireless communications; channel delay profile characteristics; channel propagation conditions; decision feedback equalizers; generated received signal; high data rate; indoor communications systems; irreducible error rate; linear equalization; millimeter-wave frequencies; multipath fading channels; nonlinear equalization; one sided exponential model; performance; power delay profile model; simulations results; transmission rate; uniform model; Adaptive equalizers; Broadband communication; Context; Delay; Error analysis; Frequency; Indoor communication; Millimeter wave technology; Wideband; Wireless communication;
Conference_Titel :
Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd
Print_ISBN :
0-7803-6507-0
DOI :
10.1109/VETECF.2000.886670