Double differentially coherent pseudorandom noise code acquisition method for code-division multiple-access system

• Published in: IET signal processing Vol. 7; no. 7; pp. 587 - 597
• Main Authors: Jin, Tian, Lu, Fangyao, Liu, Yang, Qin, Honglei, Luo, Xiling
• Format: Journal Article
• Language: English
• Published: Stevenage The Institution of Engineering and Technology 01.09.2013; Institution of Engineering and Technology
• Subjects: Applied sciences; CDMA system; code division multiple access; code‐division multiple‐access system; DDF coherent pseudorandom code acquisition method; detection probability; double differentially coherent pseudorandom noise code acquisition method; Exact sciences and technology; false alarm probability; Information, signal and communications theory; Modulation, demodulation; noncoherent detector; probability; Signal and communications theory; Telecommunications and information theory; DDF coherent pseudorandom code acquisition method; probability; noncoherent detector; double differentially coherent pseudorandom noise code acquisition method; false alarm probability; code-division multiple-access system; CDMA system; detection probability; code division multiple access; Probabilistic approach; Code division multiple access; Non coherent detection; Spread spectrum; Pseudorandom sequence; Coherent detection; Demodulation; False alarm rate
• ISSN: 1751-9675; 1751-9683; 1751-9683
• DOI: 10.1049/iet-spr.2012.0020

This study proposes a double differentially (DDF) coherent pseudorandom code acquisition method for code-division multiple-access (CDMA) system. Nonlinear loss, false alarm probability and detection probability of this method have been analysed. Compared with real differentially coherent method, DDF method can be applied to improve detection performance in CDMA system. Furthermore, the analysis and simulations in this study illustrate that the proposed detector can provide 1–3 dB improvement compared with the complex differentially coherent detector, and 2–5 dB improvement compared with the non-coherent detector.