A data sending method for the sending end of a single-carrier frequency domain equalization system

A data transmission method and single-carrier frequency-domain technology, applied in baseband systems, transmission systems, digital transmission systems, etc., can solve problems such as inter-symbol interference in UW fields, and achieve the effect of avoiding inter-symbol interference and improving quality

Active Publication Date: 2021-08-31
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the UW field used as channel estimation will still suffer from the intersymbol interference caused by the previous data

Method used

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  • A data sending method for the sending end of a single-carrier frequency domain equalization system
  • A data sending method for the sending end of a single-carrier frequency domain equalization system
  • A data sending method for the sending end of a single-carrier frequency domain equalization system

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] refer to figure 1 and figure 2 , a data transmission method for a transmitter of a single-carrier frequency domain equalization system, comprising the following steps:

[0036] Step 1: Determine the signal space propagation delay τ according to the maximum transmission distance of the system sapce , according to the main frequency clock of the system processor to determine the physical layer signal processing delay τ procs , to calculate the sum of the spatial propagation delay and the physical layer signal processing delay, which is called the total physical layer delay τ total , τ total =τ sapce +τ procs . where τ procs Including the processing time of the sending end and the processing time of the receiving end; the processing time of the sending end includes modulation, channel coding, signal interleaving, and the time of se...

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Abstract

The invention discloses a data sending method for a sending end of a single-carrier frequency domain equalization system, belonging to the technical field of radio transmission and communication. The method determines the number of symbols, unique word length and effective data symbol length ratio of the physical layer channel frame according to system requirements, propagation distance, channel maximum delay extension and other parameters. When the data is sent, the source outputs the corresponding digital information, and then sequentially encodes, interleaves, modulates, inserts unique words, inserts unique word cyclic prefix, filters, D / A conversion, and finally transmits through the radio frequency channel module and antenna. The invention can configure parameters flexibly, so that the application under the conditions of different transmission rates, physical layer transmission time delays and multipath maximum time delay expansion conditions can be satisfied according to system requirements. At the same time, the channel estimation of this method is no longer subject to the problem of intersymbol interference caused by other data, which improves the performance of the system.

Description

technical field [0001] The invention belongs to the technical field of radio transmission and communication, in particular to a data sending method for a sending end of a single-carrier frequency domain equalization system. Background technique [0002] In a wireless transmission system, when there is multipath fading in the channel environment, the basic transmission technologies can be divided into two categories: multi-carrier and single-carrier. Among the multi-carrier transmission technologies, OFDM technology is the most representative, but this technology has a high peak-to-average ratio (PAPR) and is sensitive to carrier offset and timing synchronization errors. Among the single-carrier transmission technologies, the most obvious features of the single-carrier frequency domain equalization (SC-FDE) system are low PAPR and insensitivity to carrier frequency shift. [0003] The single-carrier frequency domain equalization system solves the inter-symbol interference ge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L25/03
CPCH04L1/0071H04L25/03159H04L2025/03522
Inventor 扈鹏杜明马鹏飞汪沛陈远友张望成
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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