Journal of the Korean Institute of Telematics and Electronics B (전자공학회논문지B)
- Volume 33B Issue 10
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- Pages.72-79
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- 1996
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- 1016-135X(pISSN)
Design and implementation of a speech coder for CDMA cellular system
CDMA 이동통신 시스템용 음성부호화기 설계 및 구현
Abstract
We developed a speech coder that can transfer data as well as speech for CDMA digital cellular system. We describe the design method of the speech coder that uses QCELP algorithm for speech coding. The speech coder is implemented on a single fixed-point DSP chip (TMS320C50). the coder has the complexity such as 4K words in RAM, 10K words in ROM, and 33 MIPS in execution time. The developed speech coder is fully tested and successfully working on the CDMA base station system.
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