DocumentCode
2641485
Title
Analysis and improvement of the J.83 annex B trellis code for cable modems
Author
Gatherer, Alan ; Ali, Murtaza
Author_Institution
DSPS R&D Center, Texas Instrum. Inc., TX, USA
Volume
2
fYear
1998
fDate
1-4 Nov. 1998
Firstpage
1773
Abstract
The SCTE and IEEE802.14 cable modem standards specify a trellis code that is not a simple variant of one of the Ungerboeck or Wei codes that are commonly used as benchmarks in the industry. As far as the authors know there has been no published analysis of the cable modem code and so we commence this paper with an analysis of the code properties that show it is not as powerful as the better known Wei codes. We then show how a simple modification to the code produces up to 1.2 dB performance improvement.
Keywords
IEEE standards; modems; telecommunication cables; telecommunication standards; trellis codes; IEEE802.14 cable modem standard; J.83 annex B trellis code; SCTE cable modem standard; Ungerboeck codes; Wei codes; cable modems; code properties; performance improvement; Bit rate; Code standards; Convolutional codes; Degradation; Digital signal processing; Instruments; Modems; Quadrature phase shift keying; Research and development; Signal to noise ratio;
fLanguage
English
Publisher
ieee
Conference_Titel
Signals, Systems & Computers, 1998. Conference Record of the Thirty-Second Asilomar Conference on
Conference_Location
Pacific Grove, CA, USA
ISSN
1058-6393
Print_ISBN
0-7803-5148-7
Type
conf
DOI
10.1109/ACSSC.1998.751629
Filename
751629
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