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SCMA uplink frequency spectrum resource allocation method based on minimum interference

A spectrum resource allocation and minimization technology, applied to the separation device of transmission path, multiple use of transmission path, network planning, etc., can solve the problems of spectrum resource utilization, low system sum rate, spectrum resource interference, etc.

Active Publication Date: 2020-02-07
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0006] Purpose of the invention: In order to overcome the serious interference caused by the reuse of spectrum resources by communication users in the existing technical solutions, and the problems of low utilization rate of spectrum resources and low system and rate, the present invention provides an SCMA uplink spectrum resource allocation based on minimizing interference Method, on the basis of satisfying the user transmission rate Qos requirement of the SCMA uplink, the present invention designs a spectrum resource allocation method that minimizes the interference signal of the user on the subcarrier K, by using a unique user codebook The allocation method and the Shannon limit not only guarantee the maximum transmission rate of user services, but also optimize the throughput of the system

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  • SCMA uplink frequency spectrum resource allocation method based on minimum interference
  • SCMA uplink frequency spectrum resource allocation method based on minimum interference
  • SCMA uplink frequency spectrum resource allocation method based on minimum interference

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Embodiment Construction

[0064] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention All modifications of the valence form fall within the scope defined by the appended claims of the present application.

[0065] A SCMA uplink spectrum resource allocation method based on minimizing interference, such as Figure 1-4 shown, including the following steps:

[0066] Step 1: Determine the SCMA uplink channel system model, and create a model based on throughput maximization.

[0067] Step 1.1, determine the SCMA uplink information, and obtain the received signal y according to the maximum number of users that can be carried by the uplink, the number of subcarriers in the upl...

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Abstract

The invention discloses an SCMA uplink frequency spectrum resource allocation method based on minimum interference, which allocates a frequency spectrum bandwidth to a subcarrier of an SCMA uplink system at a base station end according to a derived frequency spectrum bandwidth formula on the basis of user codebook resource allocation so as to meet the transmission rate requirement of each user service. According to the SCMA uplink frequency spectrum resource allocation method based on minimum interference, the user transmission rate Qos requirement of the SCMA uplink is satisfied; and the spectrum resource allocation method for minimizing the interference signal of the user on the subcarrier K is designed, and by applying the unique user codebook allocation method and the Shannon limit, not only is the user service ensured to reach the maximum transmission rate, but also the throughput of the system can be optimal.

Description

technical field [0001] The invention relates to an SCMA uplink frequency spectrum resource allocation method based on interference minimization, and belongs to the technical field of wireless communication. Background technique [0002] Sparse Code Multiple Access (SCMA) technology is a new air interface core technology for the second fifth-generation mobile communication network proposed by Huawei. Domain multiple access to improve the utilization efficiency of wireless spectrum resources. The SCMA codebook design is its core, and the codebook design is mainly composed of two parts: 1. Low-density spread spectrum; 2. High-dimensional QAM modulation. Combining these two technologies, the codebook set with the best performance is selected through operations such as conjugation, permutation, and phase rotation. Different users use different codebooks for information transmission. [0003] In the SCMA uplink system, each user is assigned a specific codebook, which determines ...

Claims

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Application Information

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IPC IPC(8): H04W16/22H04W72/04H04W72/08H04L5/00
CPCH04W16/22H04W72/0453H04L5/001H04L5/0021H04L5/0062H04L5/0094H04W72/541Y02D30/70
Inventor 潘甦齐洁
Owner NANJING UNIV OF POSTS & TELECOMM
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