Title :
A model for the QAM channel in the presence of multipath
Author :
Bianchi, C.H. ; Sivaprasad, K.
Author_Institution :
Dept. of Electr. Eng., New Hampshire Univ., Durham, NH, USA
Abstract :
A signal model is proposed for the QAM receiver in order to study the relationship between channel distortions in frequency and system performance in time. A method for channel recovery from the receiver output is then developed. The channel response in the frequency domain and its relation to distortions in the time domain are examined. Signal information is used to characterize the communication system status during both normal and stressful conditions. Identification of failures, distortions, and interfering phenomena is obtained from channel data using the multipath channel and path loss models developed earlier.
Keywords :
frequency-domain analysis; intersymbol interference; losses; multipath channels; quadrature amplitude modulation; time-domain analysis; QAM channel model; QAM receiver; channel data; channel distortions; channel recovery; channel response; communication system status; failures identification; frequency domain; intersymbol interference; multipath channel; normal conditions; path loss models; receiver output; signal information; signal model; stressful conditions; system performance; time domain; Equalizers; Fourier series; Frequency domain analysis; Multipath channels; Phase distortion; Pulse shaping methods; Quadrature amplitude modulation; Shape; Signal processing; System performance;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest
Conference_Location :
Montreal, Quebec, Canada
Print_ISBN :
0-7803-4178-3
DOI :
10.1109/APS.1997.631729
