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Method and system for implementing single carrier iterative equilibrium using Turbo code

A single-carrier, equalization technology, applied in the single-carrier iterative equalization implementation method and system field, can solve problems such as large delays, achieve low cost, simple implementation, and overcome large delays

Inactive Publication Date: 2012-12-26
北京韦加航通科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved in the present invention is to propose a low-latency single-carrier iterative equalization implementation method and system using Turbo codes for the defect of large delay in the traditional single-carrier iterative equalization scheme

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  • Method and system for implementing single carrier iterative equilibrium using Turbo code
  • Method and system for implementing single carrier iterative equilibrium using Turbo code
  • Method and system for implementing single carrier iterative equilibrium using Turbo code

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] Figure 4 It is a schematic diagram of the single-carrier iterative equalization system of the present invention, in which π is the internal interleaver of the Turbo code, and π -1 is the turbo code internal deinterleaver, Π is the channel interleaver, Π -1 is the channel deinterleaver. As shown in the figure, the system for implementing single carrier iterative equalization of the present invention includes an equalizer, two component decoders, that is, the first component decoder (component decoder 1) and the second component decoder (component decoder 1) in the figure. Coder 2), external information registers and two multiplexers (Multiplexer, also known as multiplexer or multiplexer), that is, the first multiplexer and the second multiplexer. In this system, the equalizer and the component decoder work in parallel. In ea...

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Abstract

The invention discloses a low latency single carrier iterative equilibrium realizing method adopting Turbo code and a system thereof. The method comprises an equilibrium step and a decoding step. The decoding step comprises two component decoding steps. The equilibrium step and the decoding step are executed in parallel. While one component decoding step is executed, the codeword sequence output of the component decoding step in the previous iterative period is merged with the newest codeword sequence output of the other component decoding step. And the merged information is used as soft decision prior information for the execution of the equilibrium step. The system comprises an equalizer and a decoding part. The decoding part comprises two component decoders. The equalizer and the decoding part work concurrently. While any component decoder works, the equalizer works simultaneously. The delay of the single carrier iterative equilibrium system is the same as a non-iterative equilibrium system.

Description

technical field [0001] The invention belongs to the technical field of single-carrier frequency domain equalization, in particular to a method and system for realizing single-carrier iterative equalization using Turbo codes. Background technique [0002] A turbo code is a codec structure using an iterative feedback decoding mechanism of parallel concatenated codes, and its working principle is similar to the feedback principle of a turbo machine. The Turbo code is a high-performance code, and the decoding information is transmitted between the two component decoders and used as the prior information of the other, so that after many iterations, a reliable decoding output is obtained. figure 1 It is the schematic diagram of the Turbo code encoding circuit, where π is the internal interleaver of the Turbo code, Π is the channel interleaver, and C1 and C2 are two component encoders. [0003] The Single Carrier Frequency Domain Equalization (SC-FDE) system adopts the frequency d...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04L27/26H04L1/00
Inventor 吴昊田金洁方立
Owner 北京韦加航通科技有限责任公司