Visible light communication interference channel capacity analysis and calculation method
A technology of visible light communication and interference channel, which is applied in the field of capacity analysis and calculation of visible light communication interference channel, and can solve problems such as complex form and implementation, difficult migration of visible light communication, and difficult application
Active Publication Date: 2019-07-30
CHINA UNIV OF MINING & TECH
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Problems solved by technology
The interference channel capacity of radio frequency wireless communication is still an open problem. Although there are some better methods, the form and implementation are relatively complicated, making this method difficult to apply and difficult to migrate to visible light communication.
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Embodiment
[0133] In order to verify the effect of the present invention, a simulation comparison experiment is carried out.
[0134] For the basic visible light interference channel communication system, the relevant parameter calculation formulas are as follows:
[0135] System average electric power:
[0136] System average optical power:
[0137] System normalized signal-to-noise ratio (dB):
[0138] System peak-to-average power ratio:
[0139] Given system signal-to-noise ratio SNR and system peak-to-average power ratio in the case of,
[0140] System average electric power:
[0141] System average optical power:
[0142] For the i-th LED light,
[0143] Average electric power distribution coefficient:
[0144] Average optical power distribution coefficient:
[0145] Average electric power: ε i = ν i ε;
[0146] Average optical power: A i =μ i A;
[0147] Peak-to-average power ratio:
[0148] Visible light communication interference channel capacit...
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The invention disclose analysis and calculation methods for interference channel capacity of visible light communication. The analysis method comprises the following steps of step 1.setting a transmitting signal Xi without DC bias for an ith user in a visible light communication network; step 2.calculating a differential entropy {h(Xi)} of the transmitting signal Xi without the DC bias; step 3.adding DC bias Ai and setting a transmitting signal with the DC bias as (formula), wherein the average optical power of the transmitting signal is Po,i and the average electric power is Pe,i; and step 4.calculating to obtain a reachable rate. The invention also provides two calculation methods for the interference channel capacity of the visible light communication based on truncated Gaussian distribution and ABG distribution. According to the methods, the calculation of the channel capacity is simpler and more accurate, and meanwhile, the energy efficiency optimization and the resource allocation of a communication system can be more simply realized.
Description
technical field [0001] The invention relates to the field of visible light communication, in particular to a method for analyzing and calculating the interference channel capacity of visible light communication. Background technique [0002] 5G has become a research hotspot in the global wireless communication field. Compared with 4G, 5G has put forward technical goals such as "1000 times data traffic growth, 100 times wireless terminal capacity, 10Gbps peak transmission rate and 100Mbps-1Gbps edge rate", which means that 5G's requirements for spectrum resources and energy consumption will be far greater. More than 4G. With the rise of various broadband wireless communication networks and the emergence of a large number of mobile terminal devices, the available wireless spectrum resources are increasingly exhausted. Therefore, the shortage of spectrum resources and energy consumption caused by high-capacity wireless communication will be the key issues to be solved in the ...
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IPC IPC(8): H04B10/077H04B10/116
CPCH04B10/0773H04B10/0775H04B10/116
Inventor 马帅杨瑞鑫李世银贺阳代佳辉
Owner CHINA UNIV OF MINING & TECH