Performance of multicode DS-CDMA systems for reverse links over Nakagami-m fading channels [cdma2000]

• Main Authors: WU, Tsan-Ming, CHEN, Lien-Jui, HU, Chiung-Yuan
• Format: Conference Proceeding
• Language: English
• Subjects: Access methods and protocols, osi model; Applied sciences; Bit error rate; Demodulation; Diversity reception; Exact sciences and technology; Frequency-selective fading channels; Gaussian distribution; Information, signal and communications theory; Modulation, demodulation; Multiaccess communication; Multimedia systems; Multipath channels; Nakagami distribution; Performance analysis; Signal and communications theory; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Teleprocessing networks. Isdn; Transmission and modulation (techniques and equipments)
• ISSN: 1090-3038; 2577-2465
• DOI: 10.1109/VETECF.2004.1405008

In this paper, the performance analysis of noncoherent multicode DS-CDMA systems for reverse links of the cdma2000 radio configurations 1 and 2 over Nakagami-m frequency-selective fading channels is evaluated. The transmission system is intended to serve multi-rate multimedia applications suitable for data, voice, image, and video conveyance. A RAKE receiver structure, with square-law and equal gain combining, is used for demodulation. A statistical characterization is applied to the multiple access interferers (MAI), which can be modeled as a Gaussian distribution, and thereby, the exact bit error rate (BER) of the system with uncorrelated diversity branches over Nakagami-m channels may be derived. Numerical results over the Nakagami-m channel, which gives severe, moderate, light, and no fading environments, via adjusting its fading figure, are also provided in terms of different data rates and number of users.