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Software radio-based OFDM transmitting and receiving machine able to upgrade

A software radio and transceiver technology, applied in the field of OFDM transceivers, can solve problems such as lack of effective communication, and achieve the effect of easy application and simple structure

Inactive Publication Date: 2007-05-16
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some upgrades and frequency coverage have been considered separately in some wireless communication systems, the existing OFDM mobile communication equipment still lacks corresponding technologies and processing methods to complete different types of Effective communication between users

Method used

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  • Software radio-based OFDM transmitting and receiving machine able to upgrade
  • Software radio-based OFDM transmitting and receiving machine able to upgrade
  • Software radio-based OFDM transmitting and receiving machine able to upgrade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0046] 1) Transmission of user signals in a new type of transceiver in a broadband cell

[0047] When a mobile subscriber MS with a new type of transceiver 3 and MS 2 When transmitting data in a broadband cell, its coded and modulated symbol series b 3 and b 2 (Length is L b 3 , L b 2 ) are mapped to M 1 (01 1 , 0b 3 +L b 2 ≤M 1 ) in different subcarriers. After IFFT processing, the baseband output signal of the base station is

[0048] s l ( t ) = 1 T - T cp { Σ k = 0 ...

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PUM

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Abstract

The OFDM BS transceiver comprises: a transmission system with a variable emission module and a receiving module, a software radio controller to control modules and set relative parameters, and a channel allocation controller to appoint sub-carrier for user. This invention is benefit to update system and terminal, and simple to application in real system.

Description

technical field [0001] The invention relates to a wireless mobile communication system, in particular to an upgradeable OFDM transceiver based on software radio. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM for short) has become one of the most competitive wireless communication technologies. There are many literatures discussing OFDM system design and implementation schemes, and this technology has been applied in practical systems (such as 802.11, 802.16 series). OFDM can divide the wideband spectrum into many small narrowband sub-carriers, which can transmit high-speed data signals in a wireless multi-user environment. In particular, this technology will attract more attention from the world as an effective means of next-generation wireless mobile communication. [0003] Along with technological progress and increasing people's needs, the requirements for mobile communication systems in home and office are also increasing. In the cellu...

Claims

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Application Information

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IPC IPC(8): H04L27/26
Inventor 姬翔王海陈军梁宗闯曹锋铭赵英权徐昌浩
Owner BEIJING SAMSUNG TELECOM R&D CENT
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