Bounds and estimates of the uplink capacity of cellular systems

Author

Burr, A.G.

Author_Institution

York Univ., UK

fYear

1994

fDate

8-10 Jun 1994

Firstpage

1480

Abstract

We present bounds and estimates of the uplink spectral efficiency of cellular systems employing various multiple access schemes, in particular TDMA and CDMA in conjunction with FEC coding. We determine the cumulative distribution function of co-channel interference using a Monte Carlo technique and use this in conjunction with Shannon´s (1949) bound on channel capacity to obtain upper bounds. Estimates are also obtained using simulated performance of practical codes. We show that coded TDMA with 100% re-use gives a greater capacity than with cluster size 3, and that CDMA with voice activation has approximately twice the capacity of either. Adaptive TDMA is identified as promising scheme for further capacity improvement

Keywords

cellular radio; channel capacity; code division multiple access; encoding; forward error correction; land mobile radio; radio links; radio spectrum management; time division multiple access; CDMA; FEC coding; Monte Carlo technique; Shannon´s bound; TDMA; adaptive TDMA; cellular systems; channel capacity; cluster size; co-channel interference; coded TDMA; cumulative distribution function; frequency re-use; simulated performance; uplink capacity; uplink spectral efficiency; upper bounds; voice activation; AWGN; Base stations; Channel capacity; Distribution functions; Frequency; Interchannel interference; Monte Carlo methods; Multiaccess communication; Power system modeling; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1994 IEEE 44th

Conference_Location

Stockholm

ISSN

1090-3038

Print_ISBN

0-7803-1927-3

Type

conf

DOI

10.1109/VETEC.1994.345341

Filename

345341