Asymmetric binary modulation signal receiver

Abstract

The invention discloses an asymmetric binary modulation signal receiver. A simulated impact filter is adopted by the receiver to replace a high-speed ADC (analogue to digital converter) and a digital impact filter in the current EBPSK (extended binary phase shift keying) receiver, therefore, not only are the receiving modulation performance and work efficiency of an EBPSK modulation signal obviously improved, but also the hardware cost and complexity of the EBPSK receiver are greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of communication signal processing, and in particular relates to the enhancement and demodulation of digital communication reception signals, more specifically, it uses an analog shock filter to directly enhance and demodulate the asymmetrical binary modulation signal. Binary modulated signal receiver. Background technique [0002] 1. Asymmetric binary modulation signal [0003] In a digital communication system, the process of moving the baseband signal representing binary data up to a given transmission frequency band is called modulation, and the opposite process is called demodulation. Binary digital modulation in communication can use the binary information symbol "0" or "1" to directly change (usually called "offset keying") a certain parameter (such as amplitude, frequency, phase, etc.) To achieve, correspondingly obtain binary (binary) amplitude shift keying (2-ASK), frequency shift keying (2-FSK) ...

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Problems solved by technology

For example, when the IF of a 70MHz satellite receiver is implemented, 10 times oversampling also requires a 700MHz ADC, so a 1GHz high-speed ADC needs to be configured during project implementation. Although the number of ADC digits is not high, it is high price and high power consumption after all. device, not conducive to promotion and integration

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