Effective capacity optimization method of multi-antenna transmission under feedback limitation

A multi-antenna transmission and effective capacity technology, applied in radio transmission systems, transmission systems, electrical components, etc., can solve the problems of reduced channel effective capacity, increased feedback channel capacity, and increased system complexity, etc., to achieve the goal of improving effective capacity Effect

Active Publication Date: 2018-10-16
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

In this way, the channel state cannot be perfectly known under the condition of limited feedback amount, and the improvement of channel capacity is limited
Secondly, using feedback at the receiving end can improve the quality of the channel, but if the transmit power is constant and the feedback amount is increased, the capacity of the mai...

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  • Effective capacity optimization method of multi-antenna transmission under feedback limitation
  • Effective capacity optimization method of multi-antenna transmission under feedback limitation
  • Effective capacity optimization method of multi-antenna transmission under feedback limitation

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Embodiment Construction

[0017] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0018] Such as figure 1 As shown, the system model of this embodiment includes 1 source node S, and the source node has 4 antennas A 1 ~A 4 , 1 destination node D, each antenna sends data information through beamforming; the channel state information of each antenna is independently and identically distributed.

[0019] The flow of this embodiment is as figure 2 As shown, the detailed description is as follows.

[0020] 1) The system model contains 1 source node S, which has 4 antennas A 1 ~A 4 , 1 destination node D, each antenna of the source node sends the same data information to the desti...

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Abstract

The invention discloses an effective capacity optimization method of multi-antenna transmission under feedback limitation. Firstly, a source node pre-codes the information, and then performs data transmission with a destination node in a beam forming manner. In the precoding of the source node, channel state information needs to be obtained, so that the destination node performs channel estimationat first, and feeds back the estimated channel state information to the source node after quantifying the same. As the accuracy of channel quantization is higher, the precoding performance of the source node is better, but this also increases the feedback cost. By application of the effective capacity optimization method of multi-antenna transmission under feedback limitation disclosed by the invention, the optimal channel feedback quantization bit is sought, and the effectiveness and the reliability of wireless transmission are improved under the condition of limited feedback cost, and the effective capacity of the multi-antenna transmission is significantly improved at the same time.

Description

Technical field [0001] The invention belongs to the field of wireless communication technology, and is particularly an optimization method for effective capacity of multi-antenna transmission under limited feedback. Background technique [0002] With the rapid development of wireless communication technology and the increasing number of users, the problem of insufficient spectrum resources has become more and more serious. This has become a bottleneck in the development of wireless communication. The current hotspots of communication research include how to improve spectrum utilization and fully develop Limited spectrum resources. Multi-antenna technology can double the system channel capacity by processing the space and time domains of transmitting and receiving signals without increasing the spectrum resources and antenna transmission power, and greatly improve the flexibility and transmission efficiency of the system. Effectively improve the capacity and quality of the system...

Claims

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Application Information

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IPC IPC(8): H04B7/0456
CPCH04B7/0456
Inventor 邹玉龙吴彤姚颖朱佳余亮
Owner NANJING UNIV OF POSTS & TELECOMM
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