Smart Antennas for Wireless Communications: IS-95 and Third Generation CDMA Applications
Smart Antennas for Wireless Communications: IS-95 and Third Generation CDMA Applications
Smart Antennas for Wireless Communications
Smart Antennas for Wireless Communications
Noise analysis for a new digital beamformer on-receive-only
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
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A novel space division multiple access (SDMA) digital beamformer (DBF) is proposed which can replace traditional approaches to DBF. This new approach does not perform digital phase shifting nor does it rely on adaptive methods; however, multiple beams are produced in directions of interest. An array correlation matrix is not needed, array weights are not adapted, and an a priori knowledge of the signal environment is not required. Rather, a spreading technique is utilized that uniquely defines all received directions of interest. This receiver can create virtual contiguous beams or it can selectively look in any specific directions of interest. This approach blends the virtues of switched beam and adaptive array technologies. The new receiver has the same spatial resolution as traditional arrays while simultaneously looking in all desired directions of interest.