Title :
Performance analysis for multicarrier DS/SSMA in frequency-selective fading channels
Author :
Namgoong, June ; Lehnert, James S.
Author_Institution :
Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA
Abstract :
Multicarrier direct-sequence spread-spectrum multiple-access (MC/DS/SSMA) systems in frequency-selective fading channels are investigated. A consistent channel model is used for each system. First, the tapped delay line (TDL) channel model with uniformly spaced, uncorrelated taps is investigated to model a complex Gaussian, wide-sense stationary, uncorrelated scattering channel. An approximate average bit error rate expression is obtained for the receiver with RAKE fingers on each subcarrier branch, whose outputs are combined according to the maximum signal-to-noise ratio criterion. Various system configurations are examined for the same TDL channel model, data rate, total system bandwidth and excess bandwidth of the chip waveform.
Keywords :
Gaussian channels; error statistics; fading channels; radio receivers; spread spectrum communication; Gaussian channel; MC-DS-SSMA; RAKE receiver; direct-sequence multiple-access systems; fading channels; frequency-selective channels; multicarrier DS-SSMA; multicarrier multiple-access systems; signal-to-noise ratio; spread-spectrum multiple-access systems; tapped delay line; uncorrelated scattering channel; Bandwidth; Bit error rate; Delay lines; Fingers; Frequency-selective fading channels; Performance analysis; RAKE receivers; Scattering; Signal to noise ratio; Spread spectrum communication;
Conference_Titel :
Military Communications Conference, 2001. MILCOM 2001. Communications for Network-Centric Operations: Creating the Information Force. IEEE
Print_ISBN :
0-7803-7225-5
DOI :
10.1109/MILCOM.2001.986078
