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TRANSMITTER AND RECEIVER FOR FAST FREQUENCY HOPPING BASED ON A CYCLIC FREQUENCY HOPPING PATTERN IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM
TRANSMITTER AND RECEIVER FOR FAST FREQUENCY HOPPING BASED ON A CYCLIC FREQUENCY HOPPING PATTERN IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM
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机译:正交频分复用系统中基于循环频率跳变模式的快速频率跳变的收发器
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摘要
A transmitter and receiver for fast frequency hopping based on a cyclic frequency hopping pattern in an orthogonal frequency division multiplexing system. The transmitter outputs a transmission signal vector having a plurality of samples . In the receiver, a first Fast Fourier Transform (FFT) processor transforms a first received signal vector into a second received signal vector of a frequency domain by using FFT. An equalizer multiplies the received signal vector by an inverse matrix of a channel matrix representing characteristics of a channel from the transmitter to the receiver. A modified IFFT processor transforms output of the equalizer by using IFFT, and multiplies IFFT outputs of a last stage of the modified IFFT processor by predetermined gains associated with the cyclic frequency hopping pattern of the transmitter. A second FFT processor transforms output of the modified IFFT processor by using FFT to output a recovered received signal vector.
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