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Downlink resource allocation method for multi-base-station OFDM system

A downlink and resource allocation technology, applied in the field of communication, can solve problems such as poor communication signals and unguaranteed voice calls

Active Publication Date: 2020-08-07
TIBET UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002]At present, train passengers can only conduct simple voice and low-speed data communication through ordinary cellular mobile communication networks on the ground. In many cases, the communication signal is poor, and even basic voice calls There is no guarantee, let alone high-speed multimedia digital wireless communication

Method used

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  • Downlink resource allocation method for multi-base-station OFDM system
  • Downlink resource allocation method for multi-base-station OFDM system
  • Downlink resource allocation method for multi-base-station OFDM system

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Embodiment Construction

[0057] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0058] Such as figure 1 As shown, the multi-base station OFDM system downlink resource allocation method includes the following sub-steps:

[0059] S1. Initialize the average power of each base station on each subcarrier, and obtain the rates between different base stations and different subcarriers;

[0060] S2. Perform base station-subcarrier pairing according to rates between different base stations and different subcar...

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Abstract

The invention discloses a downlink resource allocation method for a multi-base-station OFDM system, which comprises the following sub-steps of: S1, initializing average power of each base station on each subcarrier, and acquiring rates between different base stations and different subcarriers; S2, performing base station-subcarrier pairing according to the rates between different base stations anddifferent subcarriers; S3, performing power distribution on the base station-subcarrier according to a base station-subcarrier pairing result; and S4, distributing power grid electric energy and solar energy according to the base station-subcarrier power distribution result. According to the method, base station-subcarrier distribution and power distribution methods are provided, and the maximumsystem sum rate is achieved. Further, a power system where the collected energy and the power grid coexist is used, so that the effects of saving energy, reducing emission and realizing green communication are achieved, and the power consumption of the power grid by the base station can be effectively reduced.

Description

technical field [0001] The invention relates to the communication field, in particular to a downlink resource allocation method of a multi-base station OFDM system. Background technique [0002] At present, train passengers can only conduct simple voice and low-rate data communication through the ordinary cellular mobile communication network on the ground. In many cases, the communication signal is poor, and even basic voice calls cannot be guaranteed, let alone high-speed multimedia digital wireless communication. It is far from the broadband high-speed wireless communication service expected by the majority of railway passengers. Orthogonal frequency-division multiplexing (OFDM) technology is suitable for high-speed data transmission of broadband channels with severe frequency selectivity caused by multipath propagation, and it has simple equalization, simple multiple access, and fast The advantage of low-cost receiver of Fourier transform is the main technology of 4G wi...

Claims

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Application Information

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IPC IPC(8): H04W52/02H04W52/14H04W52/24H04W52/26
CPCH04W52/0206H04W52/143H04W52/241H04W52/267Y02D30/70
Inventor 董志诚李爽吴鹏飞崔静静刘轶鹏吴志强
Owner TIBET UNIV
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