Interference-free CDMA air-link technology promising noise-limited performance

Hsiao-Hwa Chen, Yu Ching Yeh, Chien Yao Chao, Kuo Sheng Chen

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


This paper addresses the issues on design of innovative interference-free CDMA technologies whose performance will be limited by noise only. Firstly, technical limitations associated with interference-limited properties of traditional CDMA systems are revisited. Next, it will be demonstrated that it is possible to eliminate both multiple access interference (MAI) and multipath interference (MI) in a CDMA system using perfectly orthogonal complementary codes. A novel CDMA system architecture, namely DS/CC-CDMA, with an inherent immunity against MAI and MI is proposed, enabling a truly noise-limited performance. The proposed scheme can offer an isotropic MAI-free and MI-free operation in both synchronous down-link and asynchronous up-link channels as well as a very low implementation complexity. The introduction of the DS/CC-CDMA architecture gives us a great hope for a substantial capacity increase for the next generation wireless applications, which ought to deliver a much higher transmission rate than possible today.

Original languageEnglish
Pages (from-to)1349-1353
Number of pages5
JournalIEEE Vehicular Technology Conference
Issue number2
Publication statusPublished - 2003 Dec 1
Event2003 IEEE 58th Vehicular Technology Conference, VTC2003-Fall - Orlando, FL, United States
Duration: 2003 Oct 62003 Oct 9

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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