Multiplexing orthogonal prolate spheroidal wave function pulse-modulated signal demodulation method

A technology of pulse modulation signal and demodulation method, applied in the direction of multi-frequency code system, etc., can solve the problems of instability, unusability, fluctuation of demodulation performance, etc.
CN104104643AInactive Publication Date: 2014-10-15็Ž‹็บขๆ˜Ÿ
2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
็Ž‹็บขๆ˜Ÿ
Publication Date
2014-10-15
Estimated Expiration
Not applicable ยท inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a multiplexing orthogonal PSWF (Prolate Spheroidal Wave Function) pulse-modulated signal demodulation method. The method comprises the following steps: performing matched filtering processing on received signals to obtain output signals; sequencing the received signals from high power to low power according to the magnitude of output energy after matched filtering, wherein the first signal is a highest-amplitude signal while the last signal is a lowest-amplitude signal; detecting the energy difference among each pulse, adopting a whitening detection method based on successive interference cancellation if the energy difference is large, and adopting a decorrelation detection method if the energy difference is small.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a demodulation method in radio communication, in particular to a demodulation method of multi-channel orthogonal pulse modulation signals. Background technique

[0002] Multi-carrier modulation represented by Orthogonal Frequency-Division Multiplexing (OFDM) uses multiple mutually orthogonal modulation signals to transmit information at the same time, which can effectively improve the effectiveness of the communication system. The non-sinusoidal time-domain quadrature modulation method uses multi-channel ellipsoidal wave function (Prolate Spheroidal Wave Functions, referred to as PSWF) pulse groups that are orthogonal in time domain and overlapped in spectrum to transmit information, and demodulate information by using the orthogonality between pulse groups , has the advantages of high spectrum utilization and high power utilization (patent: Wang Hongxing, Zhao Zhiyong, Liu Xiguo, Mao Zhongyang, Zhang Lei, Shu Genchun, quadratu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More