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发表于 2013-10-26 19:54:52
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milosky 发表于 2013-10-26 19:49
是的,我刚注册用户,所以不能下载文献,谢谢
那你的观点呢?
Abstract—A random beamforming technique is proposed for
broadcast channels in multiple antenna systems. In the proposed
scheme, a random weight vector, corresponding to a random
pattern, is imposed on each communication resource in timefrequency
domain, with a resulting average of the random
patterns on all resources to be isotropic. We proved that, the
capacity of such a system is upper bounded by that of a single
antenna system, on the premise of same power budget. The
design criteria and detailed design of random patten sequence
are presented. We propose a basic random beamforming and
Alamouti enhanced scheme, and a structure of the transmitter
and receiver. The performance of the proposed scheme is verified
by numerical simulation. It is also observed that it is robust to
calibration errors and failures of radio frequency chains. |
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