Performance Enhancement of DS-CDMA System for Wireless Local Loop<br />10.14209/jcis.1999.5

  • Benjamin Ng
  • Elvino S. Sousa

Abstract

In this paper, performance enhancement of Wireless Local Loop (WLL) employing Spatial Division Multiple Access (SDMA) with orthogonal CDMA for the quasi-synchronous reverse link is investigated. The static channel characteristic of WLL allows base station adaptive antenna arrays and subscriber directional antenna to be used effectively. We give explicit expressions of the capacity to access their performance. In such an environment, dynamic sectorization is introduced and a simple dynamic spreading code assignment scheme is proposed to assign codes for users in different areas. Simulations results are presented which demonstrate that the use of orthogonal CDMA/SDMA with the proposed dynamic code assignment scheme yields a drastic improvement over using SDMA or orthogonal CDMA alone.
Published
17-06-2015
How to Cite
Ng, B., & S. Sousa, E. (2015). Performance Enhancement of DS-CDMA System for Wireless Local Loop<br /&gt;10.14209/jcis.1999.5. Journal of Communication and Information Systems, 14(1). Retrieved from https://jcis.sbrt.org.br/jcis/article/view/229
Section
Regular Papers