Title :
VLSI development of a reconfigurable multi-user Viterbi decoder
Author :
Reiner, Thomas ; Lindsey, Mark
Author_Institution :
Tital Linkabit, San Diego, CA, USA
fDate :
30 Sep-3 Oct 1990
Abstract :
A second-generation, multiuser, multi-code-rate Viterbi decoder that concurrently decodes up to 16 encoded data streams is developed. Maximum flexibility is designed into this 1.5 μm CMOS integrated circuit to provide complete code generator programmability for any K =7, 8, or 9 convolutional code. Eight level (3-bit) soft-decision symbol inputs are provided, plus an erasure capability to support higher code rates through the use of punctured coding. The LV789 is a reconfigurable multiuser Viterbi decoder. This 10.516 gate design is implemented in a 1.5 μm DLM CMOS gate array and is packaged in a 68 pin JLCC. The decoder may also be packaged in a ceramic or plastic 68-pin PGA. The LV789 is designed for use in military programs, operates over the military temperature range, and is screened to MIL-STD-883. The LV789 is designed as a processor peripheral, thereby permitting rapid integration of the Viterbi algorithm into any communications system under development
Keywords :
CMOS integrated circuits; VLSI; decoding; logic arrays; military equipment; 1.5 μm CMOS integrated circuit; 1.5 micron; DLM CMOS gate array; JLCC; LV789; MIL-STD-883; VSI; automatic channel synchronisation; code rates; communications system; convolutional code; differential decoding; encoded data streams; military programs; military temperature range; processor peripheral; programmable code generator; punctured coding; reconfigurable multiuser Viterbi decoder; soft-decision symbol inputs; CMOS integrated circuits; Ceramics; Convolutional codes; Decoding; Electronics packaging; Plastic packaging; Process design; Temperature distribution; Very large scale integration; Viterbi algorithm;
Conference_Titel :
Military Communications Conference, 1990. MILCOM '90, Conference Record, A New Era. 1990 IEEE
Conference_Location :
Monterey, CA
DOI :
10.1109/MILCOM.1990.117422
