Abstract
A beamspace-time (BT) RAKE receiver is proposed for multiple accessinterference (MAI) suppression and multipath diversity reception insectored wireless CDMA communications. The scheme involves three stages.First, a set of adaptive beamformers encompassing a prescribed angular sectoris constructed on an antenna array, each providing effective suppression ofout-of-sector MAI and reception of in-sector signal. Second, a set of adaptivecorrelators is attached to each beam to combat in-sector MAI. Finally, thebeamspace correlator output data are combined to capture the signal multipathscoherently.The above three-stage operation is performed in a blind mode inthat no training signal is needed. The only information required is the signature,timing and a rough estimate of the angle of arrival (AOA) of the desired signal.
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Lee, TS., Tsai, TC. & Chen, CH. A Beamspace-Time Blind RAKE Receiver for Sectored CDMA Systems. Wireless Personal Communications 17, 65–83 (2001). https://doi.org/10.1023/A:1008969622024
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DOI: https://doi.org/10.1023/A:1008969622024