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MISO-OFDM (Multiple-Input Single-Output-Orthogonal Frequency Division Multiplexing) downlink resource distribution method based on energy efficiency

A MISO-OFDM, downlink technology, applied in the field of energy efficiency-based MISO-OFDM downlink resource allocation, to achieve the effect of energy efficiency guarantee

Active Publication Date: 2012-12-05
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0004] Judging from the existing MISO-OFDM downlink resource allocation schemes, various allocation schemes have not yet reached an agreement on the measurement standard of system energy efficiency. of Service, referred to as QoS) and user service fairness is another challenge faced by the current research on communication resource allocation

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  • MISO-OFDM (Multiple-Input Single-Output-Orthogonal Frequency Division Multiplexing) downlink resource distribution method based on energy efficiency

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] Such as figure 1 As shown, consider a single-cell MISO-OFDM system, the base station is equipped with M T There are one transmitting antenna and one receiving antenna at the user end, and K users are evenly distributed in the cell. The total bandwidth of the system is B, and the subcarrier frequency used as a pilot is removed, and the set of subcarrier frequencies used by the base station to transmit data is defined as Ω, the number of subcarrier frequencies in Ω is N, and the total transmission power is constrained to P Total .

[0029] At a certain moment the shadowing effect of the use...

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Abstract

The invention discloses an MISO-OFDM (Multiple-Input Single-Output-Orthogonal Frequency Division Multiplexing) downlink resource distribution method based on energy efficiency, comprising the followings steps of: averagely distributing a total transmitted power of a base station to each sub carrier frequency in a used sub carrier frequency set omega of the base station; averagely distributing all the sub carrier frequencies in the sub carrier frequency set to all communicating users; determining the quantity of the sub carrier frequencies which are distributed to each user; and determining the sub carrier frequency set which is distributed to each user. According to the MISO-OFDM downlink resource distribution method based on the energy efficiency disclosed by the invention, a sub carrier frequency distribution scheme which has fairness and efficiency is provided under a double-variable restriction condition of a total power and each user capacity lower limit; and the optimization of system efficiency is realized through a sub channelization scheme.

Description

technical field [0001] The present invention belongs to the technical field of wireless communication, and more specifically relates to an energy efficiency-based MISO-OFDM downlink resource allocation method. Background technique [0002] Multiple-Input Single-Output (Multiple-Input Single-Output, MISO) is a smart antenna technology. In this technology, the transmitting end of the communication system uses multiple antennas, while the receiving end has only one antenna. The antennas at the end are combined to achieve the smallest error and the best data transmission speed. MISO technology has been widely used in digital television (DTV), wireless local area networks (WLANs), metropolitan area networks (MANs) and mobile communications. [0003] Orthogonal Frequency Division Multiplexing (OFDM for short) has been used as the basic modulation method of the next generation broadband wireless communication system. It first uses serial-to-parallel conversion to convert the sign...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04L5/00
CPCY02B60/50Y02D30/70
Inventor 葛晓虎胡金钟张靖黄曦倪大建韩涛
Owner HUAZHONG UNIV OF SCI & TECH
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