An FEC overlay for idle slot utilization for IS-136

Author

Yeh, Ernest Nanjung ; Hammons, A. Roger, Jr.

Author_Institution

Hughes Network Syst. Inc., Germantown, MD, USA

Volume

1

fYear

1999

fDate

36342

Firstpage

392

Abstract

BellSouth has proposed a modification to the IS-136 digital cellular standard, which they refer to as Advanced Vocoder Idle Channel Exploitation (ADVICE), in which base stations can transmit auxiliary coded (redundant) bits on otherwise unused time slots to assist certain subscriber units (SUs). We investigate two aspects of ADVICE: (1) adaptive redundancy schemes by which auxiliary bits are generated, and (2) autonomous detection mechanisms by which the SUs detect the presence of such auxiliary bits without external signaling

Keywords

cellular radio; convolutional codes; digital radio; forward error correction; maximum likelihood detection; telecommunication standards; vocoders; ADVICE; Advanced Vocoder Idle Channel Exploitation; BellSouth; FEC overlay; Hamming distance metric; IS-136 digital cellular standard; TDMA; adaptive Hamming-distance threshold; adaptive redundancy; autonomous detection; auxiliary bits detection; auxiliary coded bits; base stations; idle slot utilization; maximum likelihood statistic; rate-compatible convolutional coding; redundant bits; subscriber units; Adaptive signal detection; Base stations; Channel coding; Code standards; Convolutional codes; Protection; Radio frequency; Speech coding; Time division multiple access; Vocoders;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1999 IEEE 49th

Conference_Location

Houston, TX

ISSN

1090-3038

Print_ISBN

0-7803-5565-2

Type

conf

DOI

10.1109/VETEC.1999.778084

Filename

778084