Title :
A Single-Chip GSM Vocoder with Analog Frontend
Author :
Karema, Teppo ; Ofner, Erwin
Author_Institution :
Austria Mikro Systeme International AG, SchloÃ\x9f Premstÿtten, A-8141 Unterpremstÿtten, Austria. Tel. +43-3136-5000 Fax +43-3136-500491
Abstract :
A single chip full rate GSM vocoder designed in 1¿m CMOS process is presented. It integrates an analog frontend, an oversampled 13-bit linear codec with filters, a tone generator, interfacing logic and a RISC signal processor core preprogrammed for the RPE/LTP transcoding function as defined in the GSM recommendations. The chip operates from a single 5V supply and achieves very low power consumption by highly optimized usage of analog and digital signal processing techniques.
Keywords :
CMOS logic circuits; CMOS process; Codecs; GSM; Nonlinear filters; Reduced instruction set computing; Signal generators; Signal processing; Transcoding; Vocoders;
Conference_Titel :
Solid-State Circuits Conference, 1994. ESSCIRC '94. Twentieth European
Conference_Location :
Ulm, Germany
Print_ISBN :
2-86332-160-9
