Frame signaling transmission method based on power multiplexing

A transmission method and signaling technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems such as reducing data transmission efficiency and affecting transmission continuity, and achieve the effect of eliminating transmission delays and interruptions

Pending Publication Date: 2021-12-10
NAT SPACE SCI CENT CAS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the traditional serial frame signaling transmission method has the problem of reducing the efficiency of data transmission, and when there is a large delay in demodulation processing, it affects the continuity of transmission

Method used

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  • Frame signaling transmission method based on power multiplexing
  • Frame signaling transmission method based on power multiplexing
  • Frame signaling transmission method based on power multiplexing

Examples

Experimental program
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Embodiment 1

[0068] In this example, according to CCSDS "Variable Coding Modulation Protocol" (131.5-M-1.1), the physical layer signaling code PLSC of variable coding modulation is designed based on the ETSI DVB-S2 standard. Taking a transmission frame as the smallest unit of VCM or ACM, that is, the coding and modulation methods of data in a transmission frame are consistent, and the data of different transmission frames may adopt different coding and modulation methods.

[0069] It is assumed that the transmission frame adopts the physical layer signal code (PLSC) generation method defined by the DVB-S2 standard, and the 5-bits coding and modulation combination CODMOD code is passed Figure 5 The shown method generates 64-bits PLSC. Wherein, CODMOD represents the code rate and modulation mode of the channel coding in the transmission frame, as shown in Table 1. PLSC uses π / 2BPSK constellation mapping as a complex symbol (such as Figure 4 As shown), the physical layer signaling symbol ...

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Abstract

The invention belongs to the technical field of wireless data transmission and signal processing, and particularly relates to a frame signaling transmission method based on power multiplexing, which is used for a transmission system using a variable modulation coding / adaptive modulation coding system. The method comprises the following steps: carrying out specific modulation mapping on a physical layer signaling code PLSC of a transmission frame to form a physical layer signaling symbol sequence of the transmission frame, carrying out repeated coding on the physical layer signaling symbol sequence of the next transmission frame, and adding a filling symbol to obtain a signaling transmission sequence of the next transmission frame; enabling the signaling transmission sequence of the next transmission frame and the data symbol of the current frame to be transmitted in parallel in the same channel by using power distribution and power domain superposition coding; when the receiving end obtains the data symbol of the current frame, the receiving end obtains the physical layer signaling code of the next transmission frame in parallel, so that the parameter information of the coding modulation combination of the next frame is obtained in advance, the receiving end carries out corresponding configuration on a data demodulator and a decoder in time, and the continuity of receiving, demodulating and decoding is kept.

Description

technical field [0001] The invention belongs to the technical field of wireless data transmission and signal processing, and in particular relates to a frame signaling transmission method based on power multiplexing. Background technique [0002] In order to adapt to time-varying link conditions, variable coded modulation (VCM) and adaptive coded modulation (ACM) have been promoted, and the transmitter can select an appropriate coded modulation combination (CODMOD) for data transmission according to link conditions, and pass The physical layer signaling code (PLSC) notifies the receiving end of the CODMOD used in the current transmission frame. [0003] In the traditional data transmission method, the frame signaling is generally encapsulated after the synchronous frame header and before the data transmission for serial transmission. The receiving end needs to demodulate and decode the PLSC before it can accurately demodulate and decode the transmission data in the current ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/34H04L7/00
CPCH04L27/3416H04L7/0054
Inventor 李炯卉胡俊杰强晖萍王连国白帆
Owner NAT SPACE SCI CENT CAS
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