| 摘要 |
An improved method for reducing an amount of precoding feedback information in a multi-carrier Multiple-Input Multiple-Output (MIMO) communication system using precoding is disclosed. At the receiving end, the method jointly selects, while considering transmission quality for each relevant combination of sub-bands and matrices, a limited number of P codebook indices and a limited number of K′ sub-bands to be included in a subset ω (m1, . . . , mK′) of a set &OHgr; of allowed sub-bands. K′ is here set to a value K′<K and P is set to a value P≦̸K′. The P codebook indices and information identifying the subset ω is then conveyed to the transmitting end.
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