An interference cancellation scheme using dynamic space code multiple access (DSCMA) system

Chee Kyun Ng, Borhanuddin Mohd Ali, Sabira Khatun, Sudhanshu Shekhar Jamuar, Mahamod Ismail

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

Abstract

Non-uniform traffics can severely degrade the performance of code division multiple access (CDMA) and space division multiple access (SDMA) cellular systems. In this paper, we propose a novel interference cancellation scheme by using the joint multiple access system from the merge of CDMA and SDMA systems to form dynamic space code multiple access (DSCMA). This multiple access system uses a modified version of large area synchronous (LAS) sequence called LAS even-ternary (LAS-ET) sequence to increase its duty ratio. This sequence also exhibits a region called interference free window (IFW) near zero delay time offset. In order to ensure that all the signal components drop within the IFW, a narrow beam with higher directivity smart antenna system is exploited. The size of IFW is adapted to the smart antenna half-power beamwidth using DSC algorithm. By using this algorithm the spectrum efficiency is further increased. Finally, all the interferences induced in non-uniform traffics can be dramatically reduced in DSCMA system and thus resulting in a higher system capacity.

Original languageEnglish
Title of host publicationProceeding - 2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, ICT-MICC 2007
Pages248-253
Number of pages6
DOIs
Publication statusPublished - 2007
Event2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, ICT-MICC 2007 - Penang
Duration: 14 May 200717 May 2007

Other

Other2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, ICT-MICC 2007
CityPenang
Period14/5/0717/5/07

Fingerprint

Space division multiple access
Smart antennas
Code division multiple access
interference
Time delay
traffic
efficiency

Keywords

  • CDMA
  • Interference cancellation
  • SDMA

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Communication

Cite this

Ng, C. K., Ali, B. M., Khatun, S., Jamuar, S. S., & Ismail, M. (2007). An interference cancellation scheme using dynamic space code multiple access (DSCMA) system. In Proceeding - 2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, ICT-MICC 2007 (pp. 248-253). [4448641] https://doi.org/10.1109/ICTMICC.2007.4448641

An interference cancellation scheme using dynamic space code multiple access (DSCMA) system. / Ng, Chee Kyun; Ali, Borhanuddin Mohd; Khatun, Sabira; Jamuar, Sudhanshu Shekhar; Ismail, Mahamod.

Proceeding - 2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, ICT-MICC 2007. 2007. p. 248-253 4448641.

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

Ng, CK, Ali, BM, Khatun, S, Jamuar, SS & Ismail, M 2007, An interference cancellation scheme using dynamic space code multiple access (DSCMA) system. in Proceeding - 2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, ICT-MICC 2007., 4448641, pp. 248-253, 2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, ICT-MICC 2007, Penang, 14/5/07. https://doi.org/10.1109/ICTMICC.2007.4448641
Ng CK, Ali BM, Khatun S, Jamuar SS, Ismail M. An interference cancellation scheme using dynamic space code multiple access (DSCMA) system. In Proceeding - 2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, ICT-MICC 2007. 2007. p. 248-253. 4448641 https://doi.org/10.1109/ICTMICC.2007.4448641
Ng, Chee Kyun ; Ali, Borhanuddin Mohd ; Khatun, Sabira ; Jamuar, Sudhanshu Shekhar ; Ismail, Mahamod. / An interference cancellation scheme using dynamic space code multiple access (DSCMA) system. Proceeding - 2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, ICT-MICC 2007. 2007. pp. 248-253
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