Data transmission method and device based on rate division non-orthogonal multiple access technology
A non-orthogonal multiple access and access technology, applied in the field of data transmission methods and devices, can solve problems such as limiting system performance, mismatch, and inability to flexibly adjust terminal transmission rates, so as to improve transmission efficiency, improve performance, The effect of improving flexibility
Active Publication Date: 2016-12-14
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
However, in the actual digital communication system, NOMA technology will have a contradiction between the user's actual QoS (Quality-of-Service, quality of service) requirements and channel conditions.
The power domain implementation scheme of the existing NOMA technology cannot flexibly adjust the transmission rate of the terminal; moreover, the existing implementation scheme cannot achieve a good match between the user's actual QoS requirements and the channel conditions; in addition, the existing implementation scheme will lead to wireless Unreasonable utilization of channel resources, which will limit system performance
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[0057] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. According to the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0058] see figure 1 , figure 1 It is a schematic flow chart of a data transmission method based on the rate-division non-orthogonal multiple access technology in an embodiment of the present invention, including the following steps:
[0059] Step 101, acquiring multiple terminals and transmission parameters of the multiple terminals.
[0060] Among them, multiple terminals communicate through D2D.
[0061] Step 102, according to the transmission paramet...
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The invention discloses a data transmission method and device based on rate division non-orthogonal multiple access technology, applied to the technical field of communications. The data transmission method comprises the following steps: acquiring transmission parameters of a plurality of terminals and a plurality of terminals; dividing the plurality of terminals into strong user terminals and weak user terminals according to the transmission parameters, and dividing a signal to noise ratio interval; determining an optimal division factor in the signal to noise ratio interval according to the transmission parameters; splitting the transmission power of the terminals into multiple paths of transmission sub-power according to the optimal division factor; carrying out modulation coding on the split transmission data and loading transmission sub-power, wherein the transmission sub-power of at least one path of strong user terminals is loaded to the transmission data of the weak user terminals; and acquiring the transmission data with the transmission sub-power loaded, and carrying out subsequent transmission in a non-orthogonal mode. By adopting the data transmission method and device disclosed by the invention, the transmission efficiency between the terminals and base stations is improved, and channel resources are used more fully.
Description
technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method and device based on rate division non-orthogonal multiple access technology. Background technique [0002] 5G mobile communication system is the next generation mobile communication system, and 5G mobile communication system is currently a hot area of focus and research in the industry. eMBB (enhanced Mobile Broadband, enhanced mobile broadband), mMTC (massiveMachine Type Communications, massive low-power connections) and URLLC (Ultra-Reliable and LowLatency Communications, low-latency high-reliability connections) are three typical types of 5G mobile communication systems The scene is presented. Since the challenges faced by each scenario are different, the selection of multiple access solutions should also be different according to the core requirements of each scenario. [0003] NOMA (Non-Orthogonal Multiple Access, Non-Orthogonal ...
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IPC IPC(8): H04L1/00H04W72/04H04W72/08H04W72/12H04W72/54
CPCH04L1/0009H04W72/0473H04W72/1221H04W72/51H04W72/54H04L1/00
Inventor 牛凯黄欣睿司中威董超贺志强
Owner BEIJING UNIV OF POSTS & TELECOMM