turbo编码系统的解码器辅助信道估计和帧同步

Vehicular Technology Conference. IEEE 55th Vehicular Technology Conference. VTC Spring 2002 (Cat. No.02CH37367) Pub Date : 2002-08-07 DOI:10.1109/VTC.2002.1002857

M. Howlader

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引用次数: 4

摘要

一些先前的研究已经证明了解码器辅助帧同步和信道估计作为编码系统的独立过程的可行性。本文提出了一种使用相同同步字(SW)的联合解码器辅助信道估计和帧同步过程。简而言之，该方法需要使用嵌入在中包中的SW来进行信道估计和帧同步。该方法基于列表同步方案，其中基于相关性的帧同步器将可能的延迟列表传递给涡轮解码器。最后由turbo解码器决定帧同步。turbo解码器采用导频符号辅助调制(PSAM)技术，利用帧同步的编码SW进行信道估计。通过仿真，给出了利用该方法进行信道估计的性能。

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Decoder-assisted channel estimation and frame synchronization of turbo coded systems

Some previous research has demonstrated the feasibility of decoder-assisted frame synchronization and channel estimation as separate processes for coded systems. Here a joint decoder-assisted process of channel estimation and frame synchronization using the same sync word (SW) is proposed. In brief, the method entails using a SW embedded in the mid-packet for both channel estimation and frame synchronization. The method is based on a list-synchronization scheme, where a correlation-based frame synchronizer passes a list of possible delays to the turbo decoder. The turbo decoder makes the final decision about frame synchronization. The turbo decoder is draw upon pilot symbol assisted modulation (PSAM) techniques for channel estimation using the coded SW of frame synchronization. The performance of channel estimation technique using the SW is presented via simulation.

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Vehicular Technology Conference. IEEE 55th Vehicular Technology Conference. VTC Spring 2002 (Cat. No.02CH37367)

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