Single frequency network planning method based on orthogonal frequency division multiplexing technology

Abstract

The invention discloses a single-frequency network method base on orthogonal frequency division multiplexing technique, dissolving the problem that channel interference between sub-networks at the junction of the existing single frequency network area affects the network quality of the borders. The invention comprises the following steps: the invention undergoes unified resource planning about the single frequency network; the invention undergoes unified addressing about areas provided with service from the single frequency network so that adjacent areas have different network addresses; the invention synchronizes aerial signal of the single frequency network; the invention classifies a transmitter and a honeycomb in the single frequency network; the invention determines the best distance between the transmitters in the single frequency network; the invention deals with a control channel of the single frequency network related to area; the invention deals with a business channel of the single frequency network related to area. The single frequency network needs to undergo reasonable planning about regional service at the junction of different areas, reduces channel interference between systems in different areas and improves service quality of the single frequency network.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method for planning a single frequency network based on Orthogonal Frequency Division Multiplexing (OFDM: Orthogonal Frequency Division Multiplexing) technology. technical background [0002] OFDM technology is a multi-carrier digital modulation technology and a multiplexing technology that can realize high-speed wireless digital communication. Because OFDM technology has the characteristics of high transmission rate, strong anti-multipath interference ability, and high spectrum efficiency, it has received more and more attention in the field of communication. It is currently used in DAB (Digital Audio Broadcasting: Digital Audio Broadcasting), DVB (Digital Video Broadcasting: Digital Video Broadcasting) and IEEE802.11-based WLAN (Wireless Local Area Networks: Wireless Local Area Networks) and other fields have been practically applied, and OFDM modulation technolo...

AI Technical Summary

Problems solved by technology

However, if the single frequency network system not only sends the service of the entire network, but also sends some services with regional differences, that is, the characteristics of the multi-frequency network (MFN: Multiple Frequency Networks) in the single frequency network, then it will lead to geographical boundaries. Channel interference occurs between sub-networks, which affects the network quality of their respective borders. Therefore, it is necessary to provide a single-frequency network planning method based on OFDM technology to prevent channel interference at the junction of different regions and to transmit different signals in different regions. Digital Multimedia Broadcasting Service

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