A high-speed transmission method for wireless personal communications

Khaled Letaief, J. C I Chuang, R. D. Murch

Research output: Contribution to journalArticle

13 Citations (Scopus)


The next-generation wireless personal communications systems are expected to support a wide range of high-quality services that require high data rates. Communicating at high transmission rates over the harsh wireless environment, however, creates many difficult and challenging problems. In this paper, we describe a technique for the high-speed transmission of data in wireless personal communications which we denote as multicode modulation. In this technique, the high-rate bit transmitted data is serial to parallel converted into low-rate bit streams in a similar fashion to multicarrier or multitone modulation. However, in contrast to the multicarrier method, here we propose to modulate each low-rate bit stream using direct-sequence spread-spectrum on a single carrier. It is demonstrated that by selecting the processing gain properly the total required bandwidth will be of the same order as the original high-rate data stream; thereby, gaining the inherent benefit of multipath rejection without expanding the bandwidth of the original high-rate stream. To demonstrate the potential and merits of the proposed method as an alternative technique for high-speed transmission for wireless personal communications, various simulation results over a multipath Rayleigh fading link are presented.

Original languageEnglish
Pages (from-to)299-317
Number of pages19
JournalWireless Personal Communications
Issue number3
Publication statusPublished - 1996
Externally publishedYes



  • High-speed data transmission
  • Multicode modulation
  • Spread-spectrum
  • Wireless communications

ASJC Scopus subject areas

  • Computer Networks and Communications

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