Patent ID: 8768245
Filing Date: 2014-07-01
Classification: H04B,H04L,H04W

Abstract:
1. A method performed by a relay station having multiple antennae, of relaying data from a source to a destination, the method comprising the steps of: using the multiple antennae to receive a message sent by the source, thereby forming multiple respective received signals, the message containing the data and comprising a first cyclic prefix having a length based on channel impulse response of respective channels between the source and the multiple antennae of the relay station; removing the first cyclic prefix from the received signals; encoding the received signals to form multiple Alamouti-coded second signals; inserting a second cyclic prefix into the multiple Alamouti-coded second signals; and transmitting the multiple Alamouti-coded second signals with the second cyclic prefix to the destination, the Alamouti-coded second signals being used for performing carrier frequency offset (CFO) compensation to the message at the destination.