NDLI: Performance Analysis of TCM Waveforms Transmitted over a Channel with Pulse-Noise Interference

Content Provider	IEEE Xplore Digital Library
Author	Drivas, Athanasios Robertson, Clark Ha, Tri
Copyright Year	2007
Description	Author affiliation: Electrical and Computer Engineering Department, Naval Postgraduate School, Monterey, CA 93943-5121 (Drivas, Athanasios; Robertson, Clark; Ha, Tri)
Abstract	Trellis-coded modulation (TCM) is a technique that introduces forward error correction coding without increasing the bandwidth of the channel signal. TCM combines binary convolutional codes with M-ary modulation in one operation. The waveform is assumed to be transmitted over a channel with both additive white Gaussian noise (AWGN) and pulse-noise interference (PNI). In addition to a TCM waveform consisting of a rate r = 2/3 convolutional code with 8-phase-shift keying (8-PSK) modulation (analogous to the IEEE 802.11g TCM mode) and a TCM system consisting of two rate r = 1/2 convolutional codes encoding data that is modulated on the inphase and quadrature channels, respectively, with 4-pulse amplitude modulation (4-PAM) is examined. As compared to an r = 2/3, 8-PSK TCM system, the decoding complexity of the r = 1/2, 4-PAM TCM system is significantly less when the number of encoder memory elements is large. For both TCM systems, the effect of varying the number of encoder memory elements when PNI is present is examined. It is found that as the number of encoder memory elements increases the negative effect of PNI decreases. When the total number of memory elements in the r = 1/2, 4-PAM TCM system is twice that of the r = 2/3, 8-PSK TCM system (each r = 1/2 encoder has the same number of memory elements as the r = 2/3 encoder), the r = 1/2, 4-PAM TCM system has better immunity to PNI than the r = 2/3, 8-PSK TCM system.
Starting Page	1
Ending Page	7
File Size	852195
Page Count	7
File Format	PDF
ISBN	9781424415120
DOI	10.1109/MILCOM.2007.4455244
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Performance analysis Interference Modulation coding Convolutional codes AWGN Amplitude modulation Forward error correction Bandwidth Additive white noise Decoding
Content Type	Text
Resource Type	Article

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