Receiver and reception method
A receiver and a technology for receiving signals, which are applied to receivers and receiving fields that use multi-carriers to receive and transmit signals, can solve the problems of increasing the amount of calculation, increasing the amount of calculation of code multiplexing numbers, etc., and achieve the effect of reducing the amount of calculation
Inactive Publication Date: 2010-08-25
SHARP KK
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Problems solved by technology
However, this technology has a problem of increasing the amount of computation when demodulating a multi-carrier signal with a large number of subcarriers and an MC-CDM signal.
In addition, when removing intersymbol interference during MC-CDM, there is a problem of increasing the amount of calculation for the number of code multiplexing
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A receiver includes: a replica signal creation unit which creates a replica signal as a replica of a transmission signal according to a reception signal; a time band setting unit which sets a plurality of time bands to be extracted so that a part of a signal section of the reception signal is contained in the plurality of time bands extracted; a signal extraction unit which extracts a signal of a predetermined time band of the reception signal according to the replica signal and the time band set by the time band setting unit; a synthesis unit which synthesizes signals of the respective time bands extracted by the signal extraction unit; and a decoding process unit which decodes the signal synthesized by the synthesis unit.
Description
technical field The present invention relates to a receiver and a receiving method, in particular to a receiver and a receiving method for receiving and transmitting signals by using a multi-carrier method. Background technique This application claims priority based on Japanese Patent Application No. 2007-204544 for which it applied in Japan on August 6, 2007, and uses the content here. Applying OFDM (Orthogonal Frequency Division Multiplex: Orthogonal Frequency Division Multiplexing) transmission method, through multi-carrier and guard interval (GI: Guard Interval) insertion, can reduce the impact of multi-path delay in high-speed digital signal transmission. However, in multi-carrier transmission, when there is a delayed wave beyond the guard interval, inter-symbol interference (ISI: Inter Symbol Interference) occurs when the preceding symbol enters the FFT (Fast Fourier Transform) interval, And inter-carrier interference (ICI: Inter Carrier Interference) generated due ...
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IPC IPC(8): H04J11/00H04B1/16H04B1/707
CPCH04L25/03171H04L27/2647H04L5/0021H04B1/7117H04B1/59
Inventor 吉本贵司山田良太示泽寿之
Owner SHARP KK
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