Multi-user scheduling method for energy-carrying transmission in heterogeneous fading channels
A multi-user scheduling and fading channel technology, applied in the field of wireless ad hoc network, can solve the problems affecting the network lifetime and insufficient battery energy supply, and achieve the effect of prolonging the network lifetime
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specific Embodiment approach 1
[0046] Specific embodiments 1. A multi-user scheduling method for energy-carrying transmission under a heterogeneous fading channel, the method is an order-based SNR scheduling method, and the method includes the following steps:
[0047] Step 1. Use the formula:
[0048]
[0049] Select user n for transmission * ;
[0050] Among them: n is the user serial number, define "argorder" as j th Raising the power, so that the user has j when receiving information th Raised power SNR, where the order j is an integer between 1 and N; h is the channel energy obtained when the AP transmits to the receiver, h n is the instantaneous channel power gain of all users, and h (1) ≤ h (2) ≤...≤h (N) , where h (j) for j th Minimum channel power gain;
[0051] Step 2. Calculate h in independent or non-identically distributed channels (j) The probability density function of
[0052] Step 3: Select user n for transmission * In , for a user with a given order j, calculate the ergodic ...
specific Embodiment approach 2
[0068] Specific embodiment two, the energy-carrying transmission multi-user scheduling method under the heterogeneous fading channel, this method is the N-SNR scheduling method based on order, this method comprises the following steps:
[0069] Step A1, use the formula:
[0070]
[0071] Select user n for transmission * ;
[0072] Among them: n is the user serial number, N is the number of battery-powered user terminals in the channel; h is the channel energy obtained when the AP transmits to the receiver, h n is the instantaneous channel power gain of all users, and h (1) ≤ h (2) ≤...≤h (N) , where h (j) for j th Minimum channel power gain; Ω n =E[h n ], representing the channel energy obtained from user n;
[0073] Step A2, calculate the random variable X n the j th Probability Density Functions for Order Statistics
[0074] Step A3, selecting user n for transmission * , calculate the ergodic capacity of user n;
[0075] Step A4, selecting user n for trans...
specific Embodiment approach 3
[0090] Specific embodiment three, the multi-user scheduling method of energy-carrying transmission under the heterogeneous fading channel, the method is an order-based ET scheduling method, and the method includes the following steps:
[0091] Step B1, in the time slot t, use the formula:
[0092]
[0093] Select user n for transmission * ;
[0094] Among them: n is the user serial number, the parameter When the user's N-SNR order j belongs to S a When , allocate the minimum amount of information transmission for these users, the parameter is the N-SNR order of user n, r n (t-1) is the average transmission amount of user n in the previous t-1 time slots;
[0095] Step B2, selecting user n for transmission * , calculate the average capacity of user n;
[0096] Step B3, according to the formula:
[0097]
[0098] Determine the average capacity of user n;
[0099] where: p n Indicates the possibility of user n being scheduled;
[0100] Then the average capaci...
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