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Uplink multi-user frequency domain resource allocation method based on offset single carrier (OSC) modulation

A frequency-domain resource, single-carrier technology, applied in the field of satellite mobile communications, can solve the problems that the LTE downlink resource scheduling algorithm cannot be directly used, and the satellite link power amplifier efficiency is relatively high.

Inactive Publication Date: 2013-07-31
SOUTHEAST UNIV
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Problems solved by technology

Since the satellite link requires high power amplifier efficiency, the LTE downlink resource scheduling algorithm cannot be directly used

Method used

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  • Uplink multi-user frequency domain resource allocation method based on offset single carrier (OSC) modulation
  • Uplink multi-user frequency domain resource allocation method based on offset single carrier (OSC) modulation
  • Uplink multi-user frequency domain resource allocation method based on offset single carrier (OSC) modulation

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Embodiment Construction

[0022] Let the number of active users in a single cell be N u , the system bandwidth is N rb frequency domain resource blocks. Each user can be allocated multiple consecutive frequency domain resource blocks per time slot, but one frequency domain resource block can only be allocated to one user at most, and it is assumed that each user has data to be sent. use x i,c (t) indicates whether the c-th frequency-domain resource block is allocated to the i-th user at time t, and x i,c (t)=1 means that the c-th frequency-domain resource block at time t is allocated to the i-th user. The channel quality varies according to different resource blocks in the frequency domain, user locations, and time. use r i,c (t) represents the sum rate of user i on the cth frequency domain resource block at time t. The specific implementation steps of the scheduling algorithm are as follows:

[0023] Step 1: For the c-th resource block of the i-th user, 1≤c≤N rb , calculate the SINR value of e...

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Abstract

The invention provides a frequency domain resource allocation method of multi-antenna satellite mobile communication offset single carrier (OSC) modulation, which realizes continuous allocation of frequency domain resources. The method comprises the following steps of: calculating an equivalent signal to interference and noise ratio on each resource block (RB); grouping whole spectrum resources, and calculating the rate sum of each group; calculating the ratio of an instant transmission rate of a user to an average transmission rate, and sorting the ratios of all users in a descending order; selecting u user peak points, wherein u is the number of user transmission; and sorting the instant transmission rates of all users in a descending order, and performing continuous resource allocation for the u users by a greedy algorithm according to the instant transmission rate. According to the method provided by the invention, the multi-antenna satellite mobile communication OSC modulation resource scheduling algorithm can improve the power amplification efficiency of a satellite transmitting end, reduce the A / D (analog / digital) and D / A complexity and improve the throughput rate.

Description

technical field [0001] The invention relates to the field of satellite mobile communication, in particular to a frequency domain resource allocation method under multi-antenna OSC modulation. Background technique [0002] With the acceleration of the globalization process, people's demand for mobile communication is increasing day by day. In the mobile communication market, ground mobile communication systems and satellite mobile communication systems coexist. The satellite mobile communication system is widely used because it is not restricted by the geographical environment and climatic conditions, and there is no communication blind area in the satellite coverage area. The satellite system is a long-distance wireless signal transmission system, so it is a power-limited system. Orthogonal frequency division multiplexing multi-carrier technology has the characteristics of anti-frequency selective fading, and is one of the key technologies of LTE wireless communication. Ho...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/12
CPCY02B60/50Y02D30/70
Inventor 张源王黎明高西奇尤肖虎
Owner SOUTHEAST UNIV
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