In this paper, we have analyzed the convolutional coded error performance of a 2D-RAKE receiver, in combination with transmit diversity on the downlink of a WCDMA system. The analyses assume correlated fading between receive antenna array elements, and an arbitrary number of independent but nonidentical resolvable multipaths combined by the RAKE receiver in the general Nakagami-m fading channel framework. The closed form expression of pairwise error probability is given in the simple form of a single finite limit integral, with the integrand being an elementary function of array configuration parameters, spatial correlation and operating environment factors. It is shown that the combination of coding and spatial-path combining lead to dramatic performance improvement in various fading environments.

This paper provides a framework for the analysis of error rate performance of maximal ratio combining multichannel reception of coherent linearly modulated systems over frequency-selective fading channels. Expressions for the error probability are developed, and the special cases for which closed-form or acceptable efficient numerical solutions are possible are delineated. A new efficient and accurate recursive method for the Ricean fading main resolved path case is presented for coherent quadrature amplitude modulation constellations. The effect of automatic gain control error on analysis of modulation schemes is demonstrated. Finally, numerical examples based on the maritime high-data-rate channel model are provided to demonstrate the usefulness of the framework.

The bit-error-rate (BER) performance of a 2D-RAKE receiver, in combination with transmit diversity on the downlink of WCDMA system, is presented. The analyses assume correlated fading between receive antenna array elements, and arbitrary number of independent but nonidentical resolvable multipaths; combined by the RAKE receiver, in the general Nakagami-m (1960) fading channel framework. The impacts of the array configuration (e.g. the number of transmit antennas and receive antennas, the antenna element separation) and the operating environment parameters (such as fading severity, angular spread and path delay profile), on the overall space-path diversity gain can be directly evaluated.

This paper presents the average error probability performance in coherent DS-CDMA systems using a 2D-RAKE receiver with an arbitrary number of antennas and arbitrary number of RAKE fingers. In the analysis, we assume a general frequency selective Nakagami-m fading channel with exponential multipath intensity profile. An analytical expression of the average bit-error-rate (BER) is derived, including the effects of the spatial correlation between antenna elements and non-identical fading for different multipaths. The impacts of the receiver configuration (e.g. the spatial diversity order M, the temporal diversity order L and the antenna separation) and the operating environment parameters (such as fading, maximum number of multipath components, angular spread and MIP power decay factor), on the BER performance and the cell capacity are illustrated.