SPREAD SPECTRUM MOBILE RADIO, 1977-1982

In 1977, Cooper and Nettleton proposed a spread spectrum mobile radio system using frequency-hopping multiple access, Hadamard coding for error correction, and differential phase shift keyed (DPSK) modulation, and they claimed higher spectral efficiency than frequency-division (FD) FM systems. Subsequent analyses showed that the DPSK system has a spectral efficiency of 8.4 percent as compared to the efficiency of unity for a FD-FM system with 30-kHz channel spacings. Goodman et al. suggested an alternative modulation scheme in 1980, using multilevel frequency shift keying (MFSK), and a 30 percent efficiency was obtained. The research results in spread spectrum mobile radio are summarized, and the areas requiring further investigation before a commercial system can be implemented are identified.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00189545
• Corporate Authors:

  Institute of Electrical and Electronics Engineers (IEEE)

  Operations Center, 445 Hoes Lane, P.O. Box 1331
  Piscataway, NJ  United States  08855-1331
• Authors:
  • Yue, O-C
• Publication Date: 1983-2

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 98-105
• Serial:
  • IEEE Transactions on Vehicular Technology
  • Volume: T-32
  • Issue Number: 1
  • Publisher: Institute of Electrical and Electronics Engineers (IEEE)
  • ISSN: 0018-9545
  • Serial URL: http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=25

Subject/Index Terms

• TRT Terms: Differentials (Gears); Economic efficiency; Mobile radio; Phase shift (Electricity); Spread spectrum communications
• Uncontrolled Terms: Efficiency
• Old TRIS Terms: Differential phase shift keyed modulation; Spread spectrum mobile radio
• Subject Areas: Economics; Highways; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00379737
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: HS-035 055
• Files: HSL, TRIS, USDOT
• Created Date: Dec 30 1983 12:00AM