Title :
Speech, data, and channel coding for digital cellular mobile
Author :
Mermelstein, P. ; Millar, D. ; Mony, G.
Author_Institution :
Bell Northern Res., Montreal, Que., Canada
Abstract :
An experimental system for public demonstration of speech and data transmission in a digital mobile environment is described. The speech link incorporates multipulse coding at 10 kb/s and Reed-Solomon channel coding of 3 kb/s for a total of 13 kb/s per channel. The data codec uses a packet assembler/disassembler to convert from a radio data-link-layer protocol to a 9.6-kb/s asynchronous communication protocol. The data stream is protected by a (56,39) Reed-Solomon code and by the automatic repeat request of the data-link-layer protocol. Speech and data are carried on independent 16-kb/s streams multiplexed into a 48-kb/s TDMA channel. Subjective and objective performance results reported for a variety of transmission experiments verify that good-quality speech transmission and high-throughput data transmission with excellent integrity are achievable over a channel characterized by a 14-dB carrier-to-interference ratio
Keywords :
cellular radio; codecs; digital radio systems; encoding; protocols; speech analysis and processing; Reed-Solomon code; TDMA channel; asynchronous communication protocol; automatic repeat request; carrier-to-interference ratio; channel coding; data codec; digital cellular mobile; integrity; multipulse coding; packet assembler/disassembler; performance; radio data-link-layer protocol; speech coding; speech link; Assembly; Asynchronous communication; Automatic repeat request; Channel coding; Codecs; Data communication; Protection; Protocols; Reed-Solomon codes; Speech coding;
Conference_Titel :
Communications, 1990. ICC '90, Including Supercomm Technical Sessions. SUPERCOMM/ICC '90. Conference Record., IEEE International Conference on
Conference_Location :
Atlanta, GA
DOI :
10.1109/ICC.1990.117312
