Abstract
This paper describes the use of equalization in conjunction with channel filtering to improve QPSK transmission subject to both InterSymbol interference (ISI) and interchange interference (ICI). Performance bounds are computed using the nonclassical Gauss-quadrature rule (GQR) method. The signal-to-noise ratio (SNR) gain due to linear equalization over Non equalization is thereby obtained and presented. The performance of a linear equalizer thus obtained is compared with the Viterbi algorithm sequence estimator (VASE). In the absence of bounds for the VASE receiver under the channel conditions considered, simulation results are used to make the comparison. With a possible difference in the accuracies of the performance thus obtained it is shown that the VASE provides improved performance over the linear equalizer under the channel conditions considered. Copyright © 1977 by The Institute of Electrical and Electronics Engineers, Inc.
Recommended Citation
S. H. Raghavan and R. E. Ziemer, "Improving QPSK Transmission In Band-Limited Channels With Interchannel Interference Through Equalization," IEEE Transactions on Communications, vol. COM thru 25, no. 10, pp. 1222 - 1226, Institute of Electrical and Electronics Engineers, Jan 1977.
The definitive version is available at https://doi.org/10.1109/TCOM.1977.1093729
Department(s)
Electrical and Computer Engineering
International Standard Serial Number (ISSN)
0090-6778
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2023 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Jan 1977
