rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    non sort: A
    title: trellis-coded CDMA system based on orthogonal plane sequence modulation
  name:
    name part: Choe, Sangho
    name part: 1960-
    role:
      role term: creator
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: xx
    date issued: 2001
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xiii, 115 leaves : illustrations ; 28 cm.
  abstract: A novel trellis-coded-modulation scheme, named as orthogonal plane sequence modulation (OPSM) , is introduced whose signal space defines over L (L[]2) orthogonal planes. Its geometric uniformity and binary isometric labeling is verified. Both quasi-synchronous trellis-coded CDMA (QS-TC-CDMA) system and asynchronous trellis-coded CDMA (A-TC-CDMA) system, which are based on OPSM, are presented, respectively, and their theoretical upper bounds are derived under an AWGN channel plus multi-user interference. The average degradation due to multi-user interference is calculated based on the Gaussian quadrature rules (GQR). Gold sequences are utilized as a pseudo-random sequence and Ungerboeck's systematic convolutional encoders with feedback are employed for the trellis-code implementation. Due to the OPSM's multi-planar signal space expansion, a QS-TC-CDMA system based on OPSM improves the system performance over conventional QS-TC-CDMA systems based two-dimensional signaling, and even over conventional multicode QS-TC-CDMA systems that have the same number of sequences per user. An A-TC-CDMA system based on OPSM has better cross-correlation characteristics over conventional biorthogonal signaling based A-TC-CDMA systems, especially at high data rates, so that at practical error rates the proposed scheme has a superior gain to biorthogonal signaling schemes. Furthermore, compared to standard convolutionally-coded CDMA systems, the proposed TC-CDMA system is superior under the same delay conditions (quasi-synchronous or asynchronous) , same processing gain, and same decoder complexity. We also simulate the proposed system under a Rician fading channel, which shows that the system performance gain of TC-CDMA system based on OPSM is more pronounced over conventional TC-CDMA systems. OPSM provides several constellation options for a certain data rate so that the proposed system is highly adaptable to dynamic channel conditions and allows a flexible system design. Additionally…
  note: by Sangho Choe.
  note: Vita.
  note: "Major Subject: Electrical Engineering".
  note: Issued also on microfiche from University Microfilm Inc.
  note: Ph. D. Texas A&M University 2001.
  note: Includes bibliographical references (leaves 89-96).
  subject:
    topic: Major electrical engineering
  identifier: 99-11691 UMI
  identifier: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  record info:
    record content source: TXA
    record creation date: 020123
    record change date: 20190325102929.0
    record identifier: in00001646768