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Laser satellite relay communication method and device

A relay communication, satellite technology, applied in the field of satellite communication, can solve the problems of low frequency band utilization and system capacity, insufficient spectrum resources of satellite communication, etc. The effect of utilization

Active Publication Date: 2019-12-03
ZKICME SUZHOU MICROELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spectrum resources reserved for satellite communications are not sufficient, how to effectively improve the frequency band utilization has become an urgent problem to be solved
[0003] Traditional satellite communication multiple access methods include time division multiple access, code division multiple access and space division multiple access, etc., but the frequency band utilization and system capacity are still low

Method used

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  • Laser satellite relay communication method and device
  • Laser satellite relay communication method and device
  • Laser satellite relay communication method and device

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Experimental program
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Embodiment

[0111] For a method of iterative communication based on photon counting proposed by the present invention, the specific steps and results are as follows:

[0112] Based on the AWGN channel, Matlab simulation is carried out on IDMA10 iteration reception. The data length of each frame is 256, and the data code rate is 1kbps. The spreading sequence c={1,-1,1,-1,...}, the length is 16. The pilot unique word is a pair of PN sequences of 128 bits, 256 bits, 512 bits, and 1024 bits orthogonally, and the code rate is 16kbps. The ratios of the pilot length corresponding to the unique word length of each pilot to the effective information length are 1 / 32, 1 / 16, 1 / 8, and 1 / 4 respectively. The signal modulation method is BPSK, and the carrier frequency is 32kHz. Assume that each user transmits with equal power and the signal amplitude is 1. The channel simulates the constant parameter channel of the geosynchronous orbit satellite, the frequency change is ignored, and the amplitude and...

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Abstract

The invention belongs to the technical field of satellite relay communication, and particularly relates to a laser satellite relay communication method and device. According to the invention, the carrier multiplexing problem of a satellite-user link is solved by adopting an Interleaved Division Multiple Access (IDMA) technology, the carrier multiplexing of a satellite-gateway station link is solved by using a paired carrier multiple access (PCMA) technology. Photon counting is used for detecting an optical signal, and an information sequence is obtained through parameter estimation of PCMA anditerative detection of a basic signal detector (ESE)-decoder (DEC) module. The method can detect extremely weak optical signals and effectively improve the frequency band utilization rate, and can beapplied to a satellite relay communication system.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, and in particular relates to a laser satellite-based relay communication method and device. Background technique [0002] In recent years, satellite communication has attracted widespread attention due to its advantages of not being affected by terrain, long communication distance, large communication capacity, high economic benefits, and convenience for earthquake relief. However, the spectrum resources reserved for satellite communications are not abundant, and how to effectively improve the frequency band utilization has become an urgent problem to be solved. [0003] Traditional satellite communication multiple access methods include time division multiple access, code division multiple access and space division multiple access, etc., but the frequency band utilization and system capacity are still low. The orthogonal multiple access method can only send one user information ...

Claims

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Application Information

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IPC IPC(8): H04B7/185H04L1/00
CPCH04B7/1851H04L1/005H04L1/0071
Inventor 姜培
Owner ZKICME SUZHOU MICROELECTRONICS CO LTD
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