M-Ary Alpha-Stable Noise Modulation in Spread-Spectrum Communication

ÇEK M. E.

FLUCTUATION AND NOISE LETTERS, vol.14, no.3, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 14 Issue: 3
  • Publication Date: 2015
  • Doi Number: 10.1142/s0219477515500224
  • Journal Name: FLUCTUATION AND NOISE LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: Noise modulation, alpha-stable distributions, random carrier, spread-spectrum communication, symmetric alpha-stable differential shift keying (S alpha S-DSK)
  • Dokuz Eylül University Affiliated: Yes

Abstract

In this paper, a spread-spectrum communication system based on a random carrier is proposed which transmits M-ary information. The random signal is considered as a single realization of a random process taken from prescribed symmetric alpha-stable (S alpha S) distribution that carries digital M-ary information to be transmitted. Considering the noise model in the channel as additive white Gaussian noise (AWGN), the transmitter sends the information carrying random signal from non-Gaussian density. Alpha-stable distribution is used to encode the M-ary message. Inspired by the chaos shift keying techniques, the proposed method is called M-ary symmetric alpha-stable differential shift keying (M-ary S alpha S-DSK).