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Adaptive modulation and coding method and device

An adaptive modulation and coding method technology, which is applied in the direction of adjusting channel coding, devices dedicated to transmitters, and adjusting transmission rates, etc., can solve problems such as waste of system throughput, unstable system operation, and unsuitable modulation and coding methods

Active Publication Date: 2018-03-27
INT BUSINESS MASCH CORP
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  • Application Information

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Problems solved by technology

However, when there is interference in the working environment of the system, the signal-to-interference-noise ratio (SINR) estimated by the user terminal may not truly reflect the state of the wireless channel, resulting in the modulation and coding method determined according to this parameter is not the most suitable
If the modulation and coding mode of the user terminal is set too high, it will cause a large number of bit errors, making the system work very unstable. If the modulation and coding mode of the user is set too low, it will waste the system throughput

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  • Adaptive modulation and coding method and device
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  • Adaptive modulation and coding method and device

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Embodiment Construction

[0012] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0013] Those skilled in the art know that the present invention can be implemented as a system, method or computer program product. Therefore, the present disclosure can be specifically implemented in the following forms, namely: it can be complete hardware, it can also be complete software (including firmware, resident software, microcode, etc.), and it can also be a combination of hardware and software. Called a "circuit", "module" or "sy...

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Abstract

The present invention relates to wireless communication, which discloses an adaptive modulation and coding method, comprising: acquiring the estimated signal-to-interference-noise ratio and packet error rate of a communication link of a user terminal; setting the The first adjustment amount of the SINR of the communication link; calculate the effective SINR of the communication link according to the estimated SINR of the communication link and the first adjustment amount of the SINR; according to the communication The effective signal-to-interference-noise ratio of the link determines the modulation and coding scheme of the communication link. According to the adaptive modulation and coding method of the embodiment of the present invention, the modulation and coding method used by the user can be flexibly adjusted in an interference environment.

Description

technical field [0001] The present invention relates to wireless communication, and more specifically, to an adaptive modulation and coding method and device. Background technique [0002] In the wireless communication system, in order to improve the throughput rate of the whole system, AMC (Adaptive Modulation Coding) is widely used. Adaptive Modulation and Coding (AMC) is a technology that adaptively changes modulation and coding methods according to channel conditions. The basic working principle is: users in the center of the cell are usually assigned higher-order modulation and coding methods or coding rates to improve throughput due to better SINR, such as 64QAM and 3 / 4 code rate Turbo code. The users at the edge of the cell have lower signal-to-interference-noise ratio (SINR). In order to ensure user stability, they are assigned lower-order modulation or coding rates (such as QPSK, 1 / 2 code rate Turbo code). The use of AMC has the following advantages: (1) Users in ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/04H04L1/00
CPCH04L1/0009H04L1/0035H04L1/20H04L1/0026H04L1/0003H04L1/0015
Inventor 王启军王均松汤剑斌林咏华
Owner INT BUSINESS MASCH CORP