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Joint distribution method of multi-channel power bandwidth in cognitive radio network

A technology of cognitive radio and power bandwidth, applied in the field of cognitive radio, can solve the problem of high complexity of joint optimization of real-time information and power bandwidth

Active Publication Date: 2017-08-11
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0008] The purpose of the present invention is to overcome the problem of high complexity in the existing power bandwidth joint allocation technology that relies on the real-time information of the interference channel gain and the power bandwidth joint optimization, and proposes a multi-channel power bandwidth joint allocation in a cognitive radio network method

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  • Joint distribution method of multi-channel power bandwidth in cognitive radio network
  • Joint distribution method of multi-channel power bandwidth in cognitive radio network
  • Joint distribution method of multi-channel power bandwidth in cognitive radio network

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Embodiment 1

[0077] This embodiment further describes the steps of the method of the present invention in detail.

[0078] figure 1 is a system schematic diagram of a joint multi-channel power bandwidth allocation method in a cognitive radio network, such as figure 1 As shown, consider the situation that there is a primary user and a pair of secondary user transceivers in the cognitive radio network, and the secondary user accesses the frequency band of the primary user by using spectrum padding. Assume that the authorized frequency band of the primary user can be divided into N sub-channels, the bandwidth of each sub-channel n is W, and the transmission power of the secondary user’s transmitter on channel n is p n , is the occupied bandwidth ratio x n . At the same time on the channel n, the transmission channel gain g between the secondary user sending end and the secondary user receiving end n , and the interfering channel gain l between the primary user n .

[0079] figure 2 It...

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Abstract

A joint distribution method of a multi-channel power bandwidth in a cognitive radio network belongs to the field of radio technology. The method comprises: 1, a secondary user transmitter end sets a transmission power limit and a bandwidth constraint; 2, the secondary user transmitter end obtains channel state information in a channel state measurement module through signaling interaction with the secondary user receiver end and estimation of historical data; 3, the secondary user transmitter end sets a soft interference constraint; 4, the secondary user transmitter end carries out joint distribution of power and bandwidth to maximize the average transmission rate in a power bandwidth decision module; 5, the secondary user transmitter end uses a parsing method to solve the optimal solution of the fixed Lagrange multiplier; and 6, whether the communication between the secondary user transmitter end and the secondary user receiver end is completed is judged; if the communication is not completed, the method returns to the step 2 and continues channel state information detection of a next relevant time; or if the communication is completed, the traversal capacity is calculated. The invention has a low complexity.

Description

technical field [0001] The invention relates to a multi-channel power bandwidth joint allocation method in a cognitive radio network, belonging to the technical field of cognitive radio. Background technique [0002] With the continuous evolution of the wireless communication field, the public's requirements for wireless communication are also increasing. The construction of smart cities and smart earth has pushed the demand for network construction to the extreme. However, the communications industry has been plagued by a mismatch between limited spectrum resources and growing spectrum demand. However, spectrum usage suffers from uneven occupancy. For example, some unlicensed frequency bands - the congestion in industrial, scientific and medical frequency bands is particularly obvious; on the contrary, for example, the UHF frequency bands that are vacant after TV analog to digital, some of which are not available for up to 85% of the time. use. It can be seen that the co...

Claims

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Application Information

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IPC IPC(8): H04B17/345H04B17/382H04W16/14H04W72/04H04W72/08
CPCH04B17/345H04B17/382H04W16/14H04W72/0453H04W72/0473H04W72/541H04W72/542Y02D30/70
Inventor 范戎飞靳松陈文安建平王爱华苗权
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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