A complementary codes-based CDMA architecture for wideband mobile internet with high spectral efficiency and exact rate matching

Hsiao-Hwa Chen, Jun Feng Yeh

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The future wireless communication systems ought to offer high spectral efficiency and flexibility to carry multimedia services with variable rate requirements. The data rate change should be made scalable, continuous and real-time based to match exactly to what required in different content for conservation of precious bandwidth. The rate change in multiples of two, as implemented in the UMTS W-CDMA standard, is clearly undesirable. In particular, the multiple access technique itself should support asymmetrical traffic in up- and down-links to fit different connection modes of Internet-based applications. This paper is to propose an innovative CDMA architecture based on complete complementary (CC) codes, which can address all above concerns. The architecture makes use of 'offset-stacked' spreading modulation, based on which both high spectral efficiency and flexible rate matching are guaranteed. The proposed CC-CDMA system can support continuously alterable data rates, which can match exactly to the user demand without the need of complex 'rate-matching' algorithms.

Original languageEnglish
Pages (from-to)497-512
Number of pages16
JournalInternational Journal of Communication Systems
Volume16
Issue number6
DOIs
Publication statusPublished - 2003 Aug 1

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

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