System parameter selection for asymmetric underlay CDMA networks with interference-minimizing code assignment

Mohamed Kashef*, Mohamed Abdallah, Ayman Elezabi, Mohamed Khairy

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Citations (Scopus)

Abstract

We propose a framework for designing an underlay secondary CDMA network. The objective is to select the secondary system's bit rate and spreading factor that improve the secondary network throughput given a required bit error rate and an allowable transmit power level acceptable to the primary network. The selection scheme is applied to both the case of random code assignment and an interference-minimizing code assignment (IMCA) scheme. Our simulations reveal that the parameter selection for the system with interference-minimizing code assignment scheme leads to higher system throughput over that achieved with random code assignment. We also show that the IMCA scheme, unlike random code assignment, suffers negligible interference from adjacent bands in asynchronous channels.

Original languageEnglish
Title of host publication2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2009
Pages722-726
Number of pages5
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2009 - Perugia, Italy
Duration: 21 Jun 200924 Jun 2009

Publication series

NameIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC

Conference

Conference2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2009
Country/TerritoryItaly
CityPerugia
Period21/06/0924/06/09

Keywords

  • Cognitive radio
  • Interference mitigation
  • Underlay CDMA networks

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