NDLI: Advanced coding and modulation schemes for tdrss

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Advanced coding and modulation schemes for tdrss

Content Provider	NASA Technical Reports Server (NTRS)
Author	Harrell, Linda Kaplan, Ted Berman, Ted Chang, Susan
Copyright Year	1993
Description	This paper describes the performance of the Ungerboeck and pragmatic 8-Phase Shift Key (PSK) Trellis Code Modulation (TCM) coding techniques with and without a (255,223) Reed-Solomon outer code as they are used for Tracking Data and Relay Satellite System (TDRSS) S-Band and Ku-Band return services. The performance of these codes at high data rates is compared to uncoded Quadrature PSK (QPSK) and rate 1/2 convolutionally coded QPSK in the presence of Radio Frequency Interference (RFI), self-interference, and hardware distortions. This paper shows that the outer Reed-Solomon code is necessary to achieve a 10(exp -5) Bit Error Rate (BER) with an acceptable level of degradation in the presence of RFI. This paper also shows that the TCM codes with or without the Reed-Solomon outer code do not perform well in the presence of self-interference. In fact, the uncoded QPSK signal performs better than the TCM coded signal in the self-interference situation considered in this analysis. Finally, this paper shows that the E(sub b)/N(sub 0) degradation due to TDRSS hardware distortions is approximately 1.3 dB with a TCM coded signal or a rate 1/2 convolutionally coded QPSK signal and is 3.2 dB with an uncoded QPSK signal.
File Size	440580
Page Count	6
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19940016877
Archival Resource Key	ark:/13960/t9964g36p
Language	English
Publisher Date	1993-11-01
Access Restriction	Open
Subject Keyword	Communications And Radar Relay Satellites Ultrahigh Frequencies Satellite Transmission Bit Error Rate Superhigh Frequencies Tdr Satellites Distortion Quadrature Phase Shift Keying Data Links Reed-solomon Codes Radio Frequency Interference Degradation Trellis Coding Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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