Patent ID: 8681833
Filing Date: 2014-03-25
Classification: H04B,H04J,H04L

Abstract:
1. A communication system comprising a transmitter and a receiver, wherein the transmitter comprises: a first hopping sequence generation unit which generates a first hopping sequence whose hopping subcarrier interval is less than or equal to 1, the generation being performed based on a cell ID; a first reference signal pattern generation unit which generates a first reference signal pattern, based on a basic pattern of a reference signal including a predetermined known signal sequence and the first hopping sequence generated by the first hopping sequence generation unit; an arrangement unit which arranges the reference signal and a data signal in a predetermined position within a signal, based on the first reference signal pattern generated by the first reference signal pattern generation unit; and a signal transmission unit which transmits the signal having the reference signal and the data signal arranged by the arrangement unit to the receiver, and the receiver comprises: a signal reception unit which receives the signal transmitted from the transmitter; a second hopping sequence generation unit which generates a second hopping sequence based on a cell ID included in the signal received by the signal reception unit; a second reference signal pattern generation unit which generates a second reference signal pattern based on the basic pattern of the reference signal including the predetermined known signal sequence and the second hopping sequence generated by the second hopping sequence generation unit; a separation unit which separates the reference symbol signal and the data signal arranged in a predetermined position of the signal received by the signal receiver, based on the second reference signal pattern generated by the second reference signal pattern generation unit; and a channel estimation unit which performs channel estimation in a range where the hopping subcarrier interval is less than or equal to 1, the channel estimation being performed based on the reference signal separated by the separation unit.