Wireless resource allocation method in imperfect channel state information fading channel

A channel state information, fading channel technology, applied in wireless communication, channel estimation, channel coding adjustment, etc.

Pending Publication Date: 2021-01-12
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in these works, the channel state is assumed to be finite and discrete, that is, the finite state Markov channel model, which is very different from the characteristics of the actual wireless channel model

Method used

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  • Wireless resource allocation method in imperfect channel state information fading channel
  • Wireless resource allocation method in imperfect channel state information fading channel
  • Wireless resource allocation method in imperfect channel state information fading channel

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Embodiment Construction

[0121] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following descriptions are only exemplary and not intended to limit the invention and its scope of application.

[0122] system model

[0123] Such as figure 1 As shown, consider a point-to-point wireless communication system, the source node selects data packets from its buffer and transmits them to the destination node.

[0124] 1.1 Channel Model

[0125] It is assumed that the system time can be equally divided into a series of time intervals smaller than the channel coherence time, therefore, the channel model of the system needs to obey block flat fading. Furthermore, in practical communication systems, the channel state is continuous and infinite, and the wireless fading channel model can be assumed as a correlated Rayleigh fading channel. For time interval n, the actual channel gain and estimated channel gain can be expre...

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Abstract

The invention discloses a wireless resource allocation method in an imperfect channel state information fading channel, and the method comprises the following steps: (1) considering the influence of achannel estimation error, and modeling the estimation error of channel state information into an uncertain set by using an ellipsoid approximation method; (2) establishing a joint optimization problem by using a weighted summation method; (3) based on an on-line learning method, respectively proposing a time delay sensitive data scheduling method aiming at two conditions of channel estimation error boundary determination and uncertainty. The scheduling algorithm based on online learning provided by the invention can solve the problem of channel state information estimation errors, and improves the performance of the system in the aspects of energy efficiency, transmission delay and packet loss rate.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a wireless resource allocation method in an imperfect channel state information fading channel. Background technique [0002] With the popularization of wireless services, the demand for wireless transmission has increased significantly in recent years. In order to meet this demand, the future cellular mobile communication will provide a peak transmission rate exceeding 10Gb per second. However, high throughput usually means high energy consumption. The total energy consumption of wireless communication infrastructure accounts for more than 3% of the total electricity consumption worldwide, and this proportion is expected to increase rapidly as the data transmission rate of wireless communication increases in the future. The increase of energy consumption and the direct increase of greenhouse gas emissions have been considered as a major threat to environmental pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/08H04L1/00H04W28/14H04L25/02
CPCH04W72/0473H04L1/0005H04L1/0011H04L1/0016H04W28/14H04L25/0202H04W72/542Y02D30/70
Inventor 王俊波杨凡李楠
Owner SOUTHEAST UNIV
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