Patent ID: 8761088
Filing Date: 2014-06-24
Classification: H04J,H04L

Abstract:
1. A wireless base station apparatus which communicates with a plurality of first terminal devices belonging to a present cell of the wireless base station apparatus, based on an interleave division multiple access method that assigns an individual interleave pattern to each terminal device in advance, the wireless base station apparatus comprising: a receiver that receives signals sent from the first terminal devices and at least a signal sent from a second terminal device belonging to another cell; a computing device that computes channel values that are estimated values for respective signals sent from the first terminal devices and the second terminal device by cancelling interference between the signals, that were received by the receiver, by using interference replica signals computed for the received signals; a controller that sends information for requesting a second wireless base station apparatus which communicates with the second terminal device to send a log-likelihood ratio that is a result of decoding performed based on a signal received from the second terminal device; first decoding processors, each performing decoding using the channel value for each first terminal device, and feeding back the interference replica signal, that is computed using a log-likelihood ratio as a result of the decoding, to the computing device; and a second decoding processor that performs decoding using the log-likelihood ratio received from said second wireless base station apparatus and the channel value for the second terminal device, and feeds back the interference replica signal, that is computed using a log-likelihood ratio as a result of the decoding, to the computing device, wherein error correction that repeats the feedback operation from the first decoding processors and the second decoding processor to the computing device is performed.