Unified spatial diversity combining and power allocation schemes for CDMA systems

Junshan Zhang, Edwin K P Chong, Ioannis Kontoyiannis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


In a wireless system, fading effects can be classified into large-scale effects and small-scale effects. We use power control to compensate for large-scale fading and exploit spatial diversity to combat small-scale fading. We characterize the SIR and our results show that when each user's small-scale fading effects are independent across the antennas, there is a clear separation between the gains of power control and diversity combining, and the two gains are additive (in decibels). We then characterize the Pareto-optimal transmission power allocation.

Original languageEnglish (US)
Title of host publicationConference Record / IEEE Global Telecommunications Conference
Place of PublicationPiscataway, NJ, United States
Number of pages5
StatePublished - 2000

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Global and Planetary Change


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