TRANSMITTER-RECEIVER APPARATUS FOR FAST FREQUENCY HOPPING IN ORTHOGONAL FREQUENCY DIVISION MULTIPLE CONNECTION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a transmitter-receiver apparatus for executing a fast frequency hopping of a sample time unit in an orthogonal frequency division multiple connection system.

SOLUTION: A transmitter in this invention is constituted of a fast frequency hopping frequency modulator to convert a data element of a transmission data vector into a transmission signal vector to frequency-hopping by the sample time unit according to a fast frequency hopping pattern of the sample time unit. A receiver is constituted of a fast Fourier transformer to fast-Fourier-transform the frequency-hopped receiving signal vector into a second receiving signal vector in a frequency region, a first equalizer to conduct an inverse matrix of a channel matrix showing a channel characteristic to the receiving signal vector, and a frequency hopping restoring apparatus to output the receiving signal vector restored by conducting a frequency hopping restoring matrix to an output of the first equalizer. Thus, the performance of an entire system is improved by increasing a successful receiving probability by a frequency diversity effect.

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