The Comparison and Performance Evolution of with and Without Rake Receiver in CDMA Technique

نویسنده

  • Satya Narayana
چکیده

RAKE receiver is used in CDMA-based (Code Division Multiple Access) systems and can combine multipath components, which are time-delayed versions of the original signal transmission. Combining is done in order to improve the signal to noise ration at the receiver. RAKE receiver attempts to collect the time-shifted versions of the original signal by providing a separate correlation receiver for each of the multipath signals. This can be done due to multipath components are practically uncorrelated from another when their relative propagation delay exceeds a chip period. This paper presents the basics of RAKE receiver technique, implementation, and design in cellular systems. Also the usage of RAKE receiver is introduced in CDMA-based systems such as IS-95 and WCDMA (Wideband Code Division Multiple Access).

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تاریخ انتشار 2014