Comparative study of multiple accessing schemes

Elza Erkip, Behnaam Aazhang

Research output: Contribution to journalConference articlepeer-review


We compare the performance of different accessing schemes (frequency division, time division and code division) for the uplink in a wireless communication system. We assume an additive white Gaussian noise channel with multipath fading. We consider the case when the receiver can track the channel parameters, but the transmitters cannot. We look at three different measures of performance: the Shannon capacity, the delay limited capacity and probability of outage. Shannon capacity is better suited for systems where the delay requirements are not as stringent, whereas the delay limited capacity and probability of outage give the performance when there are strict delay requirements or when the channel is slowly fading. We observe that all three schemes have the same achievable rates of transmission in Shannon sense, but code division multiple access scheme performs better than frequency and time division in terms of delay limited capacity and probability of outage.

Original languageEnglish (US)
Pages (from-to)614-619
Number of pages6
JournalConference Record of the Asilomar Conference on Signals, Systems and Computers
StatePublished - 1998
EventProceedings of the 1997 31st Asilomar Conference on Signals, Systems & Computers. Part 1 (of 2) - Pacific Grove, CA, USA
Duration: Nov 2 1997Nov 5 1997

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications


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