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Short packet transmission delay analysis method in large-scale MIMO-NOMA system

A technology of MIMO-NOMA and transmission delay, which is applied in the field of derivation of the closed expression of delay violation probability upper limit, and can solve the problem of performance analysis without considering the short packet communication delay

Active Publication Date: 2020-01-10
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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AI Technical Summary

Problems solved by technology

However, none of the above studies considered the delay performance analysis of short packet communication in the mMIMO-NOMA system.

Method used

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  • Short packet transmission delay analysis method in large-scale MIMO-NOMA system

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Embodiment Construction

[0085] A closed-form upper bound for the delay violation probability is derived under the condition of non-ideal channel state information, which facilitates quantifying the cumulative effect of transmitter power, achievable rate, block error probability and number of antennas at the transmitter. It specifically includes the following steps:

[0086] Step A, establishing a downlink transmission system model based on massive MIMO-NOMA, and determining a channel estimation matrix;

[0087] Step B, according to the system model in step A, using Zero Forcing Beam-Forming (ZFBF) technology to eliminate inter-cluster interference, and determine the signal received by the user end;

[0088] Step C, analyzing the user transmission performance through the short packet transmission strategy, and clarifying the effective signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR) of the user, thereby determining the effective transmission rate of the downlink ...

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Abstract

The invention discloses a short packet transmission delay analysis method in a large-scale MIMO-NOMA system. In the large-scale MIMO-NOMA short packet transmission time delay analysis method, a large-scale MIMO-NOMA technology is applied to a short packet communication scene for the first time; a channel evaluation matrix of non-ideal channel state information is obtained by using channel duality;a zero-forcing beam forming technology is adopted to pre-code signals to obtain a received signal of a user, an effective SINR and an effective transmission rate of the user are determined in short packet transmission, and finally a closed expression of a receiving end time delay violation probability upper limit is derived by using random network calculation and Merlin transform.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to the derivation of the closed expression of the time delay violation probability upper limit of the receiving end in massive MIMO-NOMA downlink transmission. Background technique [0002] With the development of mobile communications, the Internet of Things has become one of the key driving factors for the development of 5G communications, and most Internet of Things applications need to meet the requirements of ultra-reliable and low-latency communications (URLLC), such as Machine-to-machine (M2M) communication. To meet the stringent low-latency requirements in 5G communications, short packets with finite block-length encoding are used for communication, and to ensure ultra-high reliability, decoding block errors transmitted using short packets cannot be ignored. Non-orthogonal multiple access (NOMA) technology can provide services for multiple users at the same...

Claims

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Application Information

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IPC IPC(8): H04B7/0413H04B17/336H04L25/02H04L25/03H04W4/70H04W24/08
CPCH04B7/0413H04L25/0224H04L25/0256H04L25/03006H04W24/08H04B17/336H04W4/70
Inventor 鲍慧石梦倩赵品芳赵伟
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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