| 摘要 |
A communication system employs relaying of communication signals. A first communication unit (105) comprises a receive front end (201, 203) generating time domain signal samples for a signal received from a source communication unit (101). A noise processor (205) generates a noise indication for the samples and a quantisation level processor (207) determines quantisation levels such that a noise contribution resulting from quantising relative to the noise indication meets a criterion. A quantisation processor (209) generates quantised signal samples by quantising the samples using the quantisation levels. A transmit unit (211) transmits the quantised signal samples to a second communication unit (103) which comprises a receiver (309) for receiving these. A receive front end (301, 303, 305, 309) of the second communication unit (103) generates receive signal samples for the signal from the source communication unit (101) and a MIMO receive processor (311) performs a Multiple In Multiple Out, MIMO, reception of the signal using these samples and the quantised signal samples from the first communication unit (105). |
