Patent ID: 8675763

Claim:
A multi-stream communication system, comprising: a first node provided with an antenna arrangement having at least one group of multiple antenna elements, each group having N antenna elements; at least one radio chain; and a switch for each radio chain arranged to cyclically connect each radio chain to said antenna elements in one of said at least one group, said switch configured to operate with a switching frequency f sw ; a second node provided with an antenna arrangement configured to receive N data streams; wherein, said first node is configured to transmit M weighted symbols formed by a weighted summation of uncorrelated symbols of an uncorrelated signal from each antenna element in each group, said uncorrelated signal comprising said uncorrelated symbols having a sampling frequency f s and said switching frequency f sw is synchronized with, or exceeds, said sampling frequency f s , said M weighted symbols being less than or equal to N and said weighted summation including a matrix of full rank; and said second node is configured to convert said N data streams into each respective uncorrelated signal.