Title :
Delay densities and adaptive equalization of indoor radio channels
Author :
Sexton, T.A. ; Pahlavan, K.
Author_Institution :
Worcester Polytech. Inst., MA, USA
Abstract :
The authors analyze the benefits of using a decision feedback equalizer (DFE) in the indoor radio environment and examine the results of performance predictions for different channel modelings. A QPSK/DFE modem with second-order diversity can operate at a data rate that is an order of magnitude higher than that of a QPSK modem without equalization. A given set of measured profiles of the channel impulse response is interpreted using two different channel models: continuous and discrete. In the performance analysis, the continuous channel model is represented by a unique delay power spectrum while in the discrete channel modeling the channel is represented by the envelope of the delay power spectrum and the arrival rate of the paths.<>
Keywords :
diversity reception; modems; phase shift keying; radiocommunication; telecommunication channels; QPSK/DFE modem; adaptive equalisation; channel impulse response; delay density; delay power spectrum; indoor radio channels; performance analysis; second-order diversity; Adaptive equalizers; Decision feedback equalizers; Delay; Indoor radio communication; Mathematical model; Performance analysis; Predictive models; Quadrature phase shift keying; Radio transmitters; Receivers;
Conference_Titel :
Military Communications Conference, 1988. MILCOM 88, Conference record. 21st Century Military Communications - What's Possible? 1988 IEEE
Conference_Location :
San Diego, CA, USA
DOI :
10.1109/MILCOM.1988.13377
