Method for collocating OFDM system

A technology of orthogonal frequency division and configuration method, which is applied in the direction of multi-frequency code system, transmission system, radio transmission system, etc., can solve the problems that FFT cannot be well supported, the complexity of system implementation is large, etc., and achieve the goal of large spectrum bandwidth Effect

Inactive Publication Date: 2013-01-16
徐州铁手五金工具制造有限公司
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AI Technical Summary

Problems solved by technology

FFT of this scale is still not well supported in the industry
If the wireless bandwidth is extended to 100MHz, the scale of FFT will be larger, and the complexity of system implementation at this time is quite large

Method used

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  • Method for collocating OFDM system
  • Method for collocating OFDM system

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Embodiment Construction

[0022] The technical solution of the present invention will be described in more detail below with reference to the drawings and embodiments.

[0023] First of all, the present invention is mainly applicable to high throughput, small coverage, and relatively static application scenarios in the case of high bandwidth, and the method of the present invention is based on such application scenarios.

[0024] In an OFDMA system, a frame is divided into several subframes, and the length of a subframe is a predetermined value. Due to different application scenarios, the system selects an appropriate configuration from a variety of different business requirements, application scenarios, and wireless bandwidth resources. Higher system efficiency and implementation simplicity are achieved.

[0025] The specific implementation steps of the configuration method of the high-bandwidth OFDM system of the present invention are as follows:

[0026] A. Determine the wireless bandwidth of the s...

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Abstract

The present invention discloses a method for configuring a high-bandwidth orthogonal frequency division system. The method comprises the following steps: A. confirming the system bandwidth and the basic subcarrier distance deltaF; B. setting the subcarrier distance to n times of deltaF according to the bandwidth, n is larger than or equal to 1; C. setting other parameters of the physical layer structure according to the new subcarrier distance confirmed in step B; and D. constructing a frame structure indication according to the parameters in steps B and C and transmitting. The problem of overlarge scale of FFT under high bandwidth can be overcome when the plan according to the invention is adopted.

Description

technical field [0001] The present invention relates to the field of wireless digital communication, in particular to a method for configuring physical layer signal parameters of a system based on Orthogonal Frequency Division Multiplex (OFDM) technology. Background technique [0002] As a multi-carrier transmission mode, OFDM converts a high-speed transmission data stream into a set of low-speed parallel transmission data streams, which greatly reduces the sensitivity of the system to the frequency selectivity of multipath fading channels. The introduction of the cyclic prefix further enhances the system's ability to resist Inter-symbol Interference (ISI). In addition, the high bandwidth utilization and simple implementation make OFDM more and more widely used in wireless communication domains. Widely, for example, WLAN system, WiMax system based on Orthogonal Frequency Division Multiple Access, etc. are all systems based on OFDM technology. [0003] Most of the new-genera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/208H04W16/00H04L27/26
Inventor 张学林
Owner 徐州铁手五金工具制造有限公司
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