Spread-spectrum transmission

Spread-spectrum transmission

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In this chapter, we present the principle of spread-spectrum transmission and demonstrate the basic underlying mechanisms for its desirable features. We first discuss the most popular spectrum spreading method, direct sequence spread spectrum (DSSS). Noting that the desirable features of spread spectrum system rely heavily on the spreading signal design, we then discuss the design of spreading codes. RAKE receiver and multiple user transmission based on DSSS are considered afterwards. We conclude the chapter with a brief discussion on frequency-hopping spread spectrum (FHSS).

Chapter Contents:

  • 7.1 Direct-sequence spread spectrum
  • 7.1.1 Spreading code design
  • 7.1.2 Effect of DSSS receiver on interference and noise
  • 7.1.3 RAKE receivers
  • 7.2 Multiple access with CDMA
  • 7.2.1 Spreading codes for multiple access
  • 7.2.2 Performance analysis
  • 7.3 Frequency-hopping spread spectrum
  • 7.4 Further readings
  • Problems
  • Bibliography

Inspec keywords: code division multiple access; spread spectrum communication; radio receivers; frequency hop communication

Other keywords: FHSS; spreading codes; multiple-user transmission; direct sequence spread spectrum; RAKE receiver; frequency-hopping spread spectrum; spectrum spreading method; signal design; spread-spectrum transmission; DSSS

Subjects: Multiple access communication; Radio links and equipment

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