正交分頻多工傳輸之信號偵測策略研究

A Strategy of Signal Detection for OFDM Transmission

杜建輝(Chien-Hui Tu)

指導教授 ： 魏學文

國立暨南國際大學/科技學院/電機工程學系通訊工程碩士班/碩士(2016年)

摘要

LTE-A(Long Term Evolution Advanced)為3GPP（3rd Generation Partnership Project）所制訂出的第四代行動無線寬頻技術之一，本文主要針對OFDM系統架構之信號偵測方法進行深入研究。本論文提出利用技術發展成熟的ZF / SIC / qSIC等信號偵測方法在不同正規化都普勒環境下，結合使用(255,223)里德-所羅門碼之Hybrid-ARQ錯誤重傳技術，來構成一個同時兼顧複雜度與性能表現之信號偵測策略，此信號偵測策略非常適合在不同移動速度下之正交分頻多工系統之傳輸。

關鍵字

LTE-A ； 正交分頻多工 ； 信號偵測 ； 里德-所羅門碼 ； 混合式自動重傳請求

並列摘要

In the thesis a new signal detection strategy that combined the mature technologies of ZF / SIC / qSIC signal detection methods and hybrid-ARQ retransmission is presented. The proposed signal detection strategy can balance the complexity and performance of the signal detection in an orthogonal frequency division multiplexing (OFDM) transmission system. Considering the joint performance of the signal detection strategy, a powerful (255, 223) Reed-Solomon (RS) forward error correction code is adopted in the Hybrid-ARQ retransmission. Based on completed simulation results, the presented signal detection strategy is verified to be suitable for the OFDM transmission system under different mobility of multi-path fading channels.

並列關鍵字

LTE-A ； OFDM ； Signal detection ； Reed-Solomon codes ； Hybrid-ARQ

參考文獻

[1] B. Sklar and E. Okamoto, “Rayleigh fading channels in mobile digital communication systems .I. Characterization,” IEEE Comm. Mag., vol. 35, pp. 136-146, Sept. 1997.

[2] T.S. Rappaport, “Wireless Communications,” Upper Saddle River, NJ: Prentice-Hall, 1996.

[3] P. Dent, G. E. Bottomley, and T. Croft, “Jakes fading model revisited,” IEE Electronics Letters, vol. 29, no. 13, pp. 1162-1163, June 1993.

[4] 3GPP. (2016, July 7). In Wikipedia, the free encyclopedia.

Retrieved December 8, 2015, from https://zh.wikipedia.org/wiki/3GPP