Coherent Multicode DS-CDMA Mobile Radio Access (Special Issue on Personal Communications)

概要

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The reverse link performance of coherent multicode DS-CDMA [4], [5] under multipath Ray1eigh fading environments is evaluated by computer simulation. It is demonstrated that the combined use of pilot symbol assisted (PSA) -coherent RAKE, channel coding, antenna diversity, and transmit power control is powerful in lowering the required signal energy per information bit-to-interference plus additive white Gaussian nose (AWGN) power spectrum density ratio (E_b/1_o) which is an important parameter in determining the link capacity. It is also demonstrated that with slight performance degradation,high rate data transmission is realized by using multiple orthogonal spreading codes in parallel (orthogonal multicode transmission). Based on the simulated link performance, the reverse link cell capacity and link budget are also evaluated. It is found that parameterη = I_o/N_o plays an important role in controlling the cell capacity and the maximum allowable path loss, where No is the AWGN power spectrum density.
社団法人電子情報通信学会の論文
1996-09-25