Iterative timing synchronization circuit and method for interleave-division multiple-access system

A technology of interleaving multiple access and timing synchronization, which is applied in the field of wireless communication and can solve problems such as timing synchronization bottlenecks

Inactive Publication Date: 2011-09-28
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technique helps improve the performance of next generation (NG) mobile networks that use advanced technologies like Orthogonal Frequency Division Multiplexed Access (OFDM), Time Difference Code Multiple Access (TDCDMA). By utilizing this new technology with better accuracy than existing methods such as pilots or Pilot Signal Interference Correctors (PSICs), it can increase network's overall data throughput without reducing its capabilities due to increased interference from other systems transmitting at the same frequency band.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the performance (spectrum capacity) and reducing delays associated with conventional Code Division Multiple Access Systems while maintaining their ability to combine signals effectively without increasing redundancy levels.

Method used

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  • Iterative timing synchronization circuit and method for interleave-division multiple-access system
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  • Iterative timing synchronization circuit and method for interleave-division multiple-access system

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Embodiment Construction

[0018] The above content of the invention of the present invention will be further described in detail below in conjunction with specific embodiments.

[0019] However, it should not be construed that the scope of the above-mentioned subject matter of the present invention is limited to the following examples. Without departing from the above-mentioned technical idea of ​​the present invention, various replacements and changes made according to common technical knowledge and customary means in this field shall be included in the scope of the present invention.

[0020] See figure 1 As shown, a schematic diagram of an iterative timing synchronization method architecture in an interleaved multiple access (IDMA) system, including user data (101), forward error correction encoder (102), interleaver (103), shaping filter (104 ), time delay controller (105) and antenna (106) unit; receiving part includes antenna part (107), sampling (108), basic signal estimator (109), interleaver ...

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Abstract

The invention discloses an iterative timing synchronization method for an interleave-division multiple-access (IDMA) system. The method comprises the following steps that: 1, a base station of the IDMA system estimates the time offset of different users by utilizing a signal to noise ratio-variance evolution technology in an iterative detection process; 2, the time offset information of each user is fed back to transmitters of corresponding users; and 3, the users implement the iterative timing synchronization method for time offset compensation to realize the iterative timing synchronization function of the IDMA system. By the circuit and the method, the problems of timing synchronization bottlenecks in the IDMA uplink communication system are solved; and the circuit and the method are mainly applied to timing synchronization in uplinks of the IDMA system.

Description

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Claims

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Application Information

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Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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