Title: Comparative Analysis of Maximum Ratio Combining and Equal Gain Combining Diversity Technique for WCDMA: A Survey
Abstract: 3 JNU Jaipur ABSTRACT: Wide Code Division Multiple Access (WCDMA) is a third generation wireless communication system. However for any wireless communication system there are various factors such as fading, interference and scattering that degrade the performance of the system. Diversity is an influential communication technique that provides wireless link enhancement at a relatively low cost. It has been used to mitigate the fading problem in wireless channel. This survey provides overview of different diversity techniques to overcome the effect of fading .The Maximum Ratio Combining (MRC) is one of the combining technique used to improve the performance of wireless communication system. In WCDMA, each user is assigned a unique code that identifies the user to the system and this code is used to modulate and demodulate the user's data. In many diversity techniques space diversity technique is very effective due to its simplicity and bandwidth efficiency. It can be implemented at both the transmitting and the receiving end. The Maximum Ratio Combining performance is the best compare to Equal Gain Combining and Selection Combining in Rayleigh fading channel. For the same SNRs signals to both branches, the output of maximal ratio combiner is more than equal gain combiner. This is due to ability of updating the weight coefficient in Maximal Ratio combining technique.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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