在無線通訊系統中，分散式天線與適當的合作式傳輸模式可以增加數據傳輸量以及網路服務品質(QoS)。本文裡， 在正交分頻多工存取中(OFDMA)，避免降低系統的容量且獲得額外的通道增益，我們使用兩組空時分組碼(space-time block codes): EO-STBC和CIOD在合作式傳輸模式裡。另外，為了增進頻譜利用率和減少跨細胞干擾的影響, 合適的頻率分配計劃(FAS) 也應用在我們的細胞結構中。本文中的分析以及模擬結果皆應用於多細胞的結構中而且考慮完整的通道效應包含路徑衰減，遮蔽效應以及小規模衰減(Rayleigh fading)。最後，分析的結果與電腦的結果幾乎符合且可證明此新細胞結構具有較良好的效能。

Wireless systems with distributed antennas and appropriate cooperative transmission scheme can enhance data throughput and quality of service (QoS). In this thesis, two kinds of space-time block codes (STBC), EO-STBC and CIOD with cooperative transmission are applied into orthogonal frequency division multiple access (OFDMA) to achieve additional transmit channel gain without degrading the system capacity. In addition, suitable frequency allocation scheme (FAS) is also utilized to boost the spectrum efficiency and reduce the effect of inter-cell interference (ICI). To verify the effectiveness of proposed cell architecture in realistic environment, all of the analyses and simulation results are taken into one-tier multi-cell scenario with considering complete channel effects, including the path loss, shadowing and Rayleigh fading. Finally, the superior performance of the proposed cell architecture can be proved and the analytical results almost match the simulation results.

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