Capacity improvement method for high-altitude communication platform system

A technology for high-altitude communication and capacity enhancement, applied in wireless communication, transmission system, radio transmission system, etc., can solve the problem of high communication demand in hotspot areas

Inactive Publication Date: 2016-02-24
PLA UNIV OF SCI & TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for increasing the capacity of the high-altitude communication platform system, which considers the interference between the two systems and the actual distribution of the interference in the cell, and solves the problem of large communication demand in hotspot areas

Method used

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  • Capacity improvement method for high-altitude communication platform system
  • Capacity improvement method for high-altitude communication platform system
  • Capacity improvement method for high-altitude communication platform system

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Experimental program
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Embodiment 1

[0136] Step 1. Build the HAPS system antenna and path loss model;

[0137] Step 2. The HAPS communication system adopts the CDMA access method. It is assumed that the ground users are evenly distributed, and the high-altitude platform is located in the stratosphere and remains relatively stationary to the ground. The model is established under ideal power control conditions. The high-altitude platform uses phased array antennas to project on the ground Several circular cells with the same area are formed to form a layered cell structure, and the uplink capacity of the HAPS-CDMA system is analyzed to determine its capacity, that is, the number of cell users:

[0138] Step 2-1: Determine the antenna received power S of the HAPS system according to the layer cell structure:

[0139]

[0140] Step 2-2. Determine the intra-cell interference received by users in the central cell I sc :

[0141]

[0142] Step 2-3: Determine the interference of all users in the cell to the central cell I j :...

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Abstract

The invention discloses a capacity improvement method for a high-altitude communication platform system. An HAPS system, namely an HAPS-CDMA system interference model, in a CDMA access manner is established at first; calculation formulae of a system interference factor and a single cellular capacity are derivate; then, the fact that the capacity of the HAPS-CDMA system is higher than that of a ground CDMA system is verified; finally, an HAPS and ground CDMA double-layer honeycomb overlapping coverage system is provided; and namely, the ground CDMA system is embedded in the original HAPS-CDMA system. By means of the method, the purposes of effectively reducing interference and improving the capacity of the system are achieved; a simulation result shows that the system capacity, which is higher than that of two kinds of single systems including the HAPS-CDMA system and the ground CDMA system, can be obtained through the method provided by the invention; and furthermore, the problems of great communication requirements in a hotspot area having relatively high population density can be solved.

Description

Technical field [0001] The invention belongs to the field of high-altitude communication, and specifically relates to a method for increasing the capacity of a high-altitude communication platform system. Background technique [0002] In recent years, the rapid development of radio technology has brought about a disruptive change in the high-tech field of human society. The rapid development of land-based cellular mobile communications and satellite communications has increasingly affected people’s lifestyles. With the rapid growth in demand for broadband multimedia services and various mobile communications, build systems with larger system capacity, higher spectrum utilization, faster network deployment speed, more convenient maintenance and update capabilities, and lower construction costs Imminent. The developing High Altitude Platform Stations (HAPS) communication system combines the technical advantages of the two traditional communication systems. It is generally consider...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04W16/18
CPCH04B7/18504H04W16/18
Inventor 王杭先张邦宁郭道省史煜李超叶展赵兵潘小飞方华
Owner PLA UNIV OF SCI & TECH
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