用於多重收發天線系統之ARQ設計

ARQ Schemes for MIMO Systems

朱緯傑(Wei-Chieh Chu)

指導教授 ： 林茂昭

國立臺灣大學/電機資訊學院/電信工程學研究所/碩士(2004年)

https://doi.org/10.6342/NTU.2004.10111

摘要

在多重收發天線系統中，利用多輸入多輸出的通道可以獲得更高的資料速率及多樣性增益。然而，在需要高可靠度之系統中，採用ARQ 有其必要性。因此，在本論文中，我們研究如何利用不同的重傳方式，結合多層次編碼設計達到高速率及高可靠度的資料傳輸。
在本論文中，我們考慮BLAST系統之準靜態衰減通道中結合多層次編碼設計以及混合四進制相移鍵控與二進制相移鍵控的重傳機制。我們給予模擬結果並且跟先前設計之以空時區塊碼為基礎之ARQ作一個比較。此外，我們將在BLAST系統之準靜態衰減通道中，研究將傳統上複雜度不同之混合自動重傳機制結合多層次編碼設計，由模擬之結果探討系統效能，並且也與以時空區塊碼為基礎之ARQ作一個比較。而且我們也利用混合ARQ將BLAST系統中不同可靠度之訊息給予不同之保護，且與傳統之ARQ作一個效能上的比較。

關鍵字

多層次空時碼 ； 空時碼 ； 自動重傳 ； 多重收發天線

並列摘要

We can get higher data rates and diversity gains through exploiting the multiple-input multiple-output (MIMO) channel. However, for applications of high reliability requirement, it is not enough to protect data simply by means of layered space-time coding. Hence, in this thesis, we study the combination of different ARQ schemes with layered space-time codes to achieve high data rate and high reliability transmissions.
In this thesis, we combine the ARQ scheme which uses both QPSK and BPSK transmission with layered space-time codes over quasi-static fading channels. We give simulation result and compare it with STBC system using a similar ARQ scheme. Furthermore, we consider applying ARQ schemes of different complexity with layered space-time codes over the quasi-static fading channels. In addition, we combine hybrid ARQ scheme which provide different protection to messages of different reliability in BLAST system. Comparison among the various ARQ schemes for layered space-time codes is given based on the simulation results.

並列關鍵字

MIMO ； Layered Space-Time Coding ； Space-Time Coding ； ARQ

參考文獻

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