A system scheme for downlink selective beamforming in smart antenna

In this paper the generalized equivalent feed model is established for downlink multiple beamforming in FDMA/FDD systems with multiple users sharing the same channel. Based on this model, a system scheme is proposed for MSK modulation, where the digital beamforming and channel allocation can be accomplished at base band, which means the possibility of using DSP and software radio technology.

[1]  Hsin-Piao Lin,et al.  Experimental studies of SDMA schemes for wireless communications , 1995, 1995 International Conference on Acoustics, Speech, and Signal Processing.

[2]  A. Paulraj,et al.  Adaptive transmitting antenna arrays with feedback , 1994, IEEE Signal Processing Letters.

[3]  J. P. McGeehan,et al.  The performance enhancement of multibeam adaptive base-station antennas for cellular land mobile radio systems , 1990 .