Multipurpose high-coding-gain 0.8-μm BiCMOS VLSIs for high-speed multilevel trellis-coded modulation

Author

Aikawa, Satoru ; Nakamura, Yasuhisa ; Takanashi, Hitoshi

Author_Institution

NTT Network Syst. Dev. Center, Tokyo, Japan

Volume

26

Issue

11

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

1700

Lastpage

1707

Abstract

Multilevel trellis-coded quadrature-amplitude-modulated (QAM) VLSIs were designed and developed. These VLSIs realize a coding gain of 7.9 dB with SPORT-256 QAM. The VLSIs contain an encoder, mapper, and decoder for trellis-coded 16, 32, 64, 128, and 256 QAM utilizing general mapping. Using small-size and low-power path memory, 150 K gates were achieved using two chips with die sizes of 8 mm×11 mm and 14 mm×14 mm. The VLSIs achieve a maximum data throughput rate of 17 MBd (guaranteed) and 30 MBd (typical) and dissipate only 1 W at a data rate of 17 MBd. The VLSIs also contain a phase ambiguity rejection circuit for a recovered carrier and error pulse generator. The devices are designed with a BiCMOS 0.8-μm process rule. The experimental result of bit-error-rate (BER) performance is presented. The VLSIs are effective for outage-free digital microwave radio systems

Keywords

BIMOS integrated circuits; VLSI; amplitude modulation; digital integrated circuits; 0.8 micron; 1 W; 7.9 dB; 8 to 14 mm; BER; BiCMOS; QAM; SPORT-256 QAM; bit-error-rate; coding gain; data rate; data throughput; decoder; die sizes; encoder; error pulse generator; experimental result; general mapping; low-power path memory; mapper; multilevel trellis-coded modulation; outage-free digital microwave radio systems; phase ambiguity rejection circuit; quadrature amplitude modulation; recovered carrier; signal-point-reduced trellis-coded QAM; Bandwidth; BiCMOS integrated circuits; Bit error rate; Decoding; Digital signal processing; Gain; Modems; Pulse generation; Quadrature amplitude modulation; Very large scale integration;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.98992

Filename

98992