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ABSTRACT: The paper presents the average bit error rate (BER) of a maximal ratio combining (MRC) two-dimensional (2D)-RAKE receiver in correlated frequency selective Nakagami fading environments in the presence of multiple co-channel interferences. A closed-form expression of the simple approximated probability density function for the signal-to-interference-plus-noise ratio (SINR) is derived for the receiver with multiple correlated antennas and multiple RAKE branches in arbitrary fading environments. The effects of spatial and temporal diversity order, angular spread, antenna spacing, average multi-path strength and fading severity on the performance of the MRC 2D-RAKE receivers are all illustrated.
Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE; 04/2003
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ABSTRACT: The closed-form expressions of signal-to-interference-plus-noise ratio (SINR) and the outage probability are derived for a maximal ratio combining (MRC) two-dimensional (2D)-RAKE receiver with imperfect power control in a frequency-selective Nakagami fading channel. The impact of power control error (PCE) on the performance of the receiver is analyzed for various fading environments. Numerical results show that the performance of 2D-RAKE receivers degrades due to imperfect power control. But when PCE is not serious, increasing the number of antennae and temporal diversity order can compensate for the performance loss. The exact performance improvement due to space-time processing varies with PCE and the fading environment.
Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE; 12/2002
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ABSTRACT: The smart antenna and spatial diversity-combining receiver are two of the most important spatial signal processing technologies. This paper studies the radio propagation characteristics of the transmission path, spatio-temporal channel model and channel characteristics in different environments. On the basis of those analyses, the authors analyzed the operating principle of the smart antenna and spatial diversity-combining technology, and especially showed the differences between these two technologies in several aspects.
Vehicular Technology Conference, 2002. VTC Spring 2002. IEEE 55th; 02/2002
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ABSTRACT: It is well known that power control is critical in CDMA mobile systems and the power control error (PCE) exists in spite of power control methods being used. In this paper, the closed-form expressions of signal-to-interference-plus-noise ratio (SINR) and the average bit error rate (BER) are derived for a two-dimensional (2-D)-RAKE receiver with imperfect power control in a frequency-selective Nakagami fading channel.. The combined impact of PCE, multipath Nakagami fading, spatial and temporal diversity order, and multiple-access interference on the system performance has been analyzed for all kinds of fading environments. The simulation results indicate that the BER performance degrade due to PCE. But increasing spatial and temporal diversity order can possibly compensate for the performance loss when PCE is not very serious. The exact performance improvement due to space-time processing varies with the PCE and the fading environment.
Communications, Circuits and Systems and West Sino Expositions, IEEE 2002 International Conference on;
