| abstract |
A system and method in which a base station (34) treats the Channel State Information, CSJ. from wireless terminals (28, 29) as only partially- stale, and exploits this partially-stale CSi to predict the current channel from old estimates of the channel. The predicted channel is then used to design a precoder (60). The base station shapes the transmitted signal with the precoder so as to match it as closely as possible to the current channel. Particular embodiments of the disclosed solutions thus combine the benefits of the stale feedback scheme with preceding to match the channel. As a result, the signal received at a terminal (28, 29) is better conditioned, thereby providing a greater overall boost ra performance of the communication arrangement between the base station (34) and the terminal (28, 29). The usage of partially-stale CSI can be important for dense networks with a large number of simple terminals. |