未來無線通訊系統，將朝向寬頻、高速資料傳送、高品質與多用戶同時傳輸的方向發展。所以本篇論文在於探討一個結合時域、頻域與空域等全方位的寬頻數位收發機系統。也就是說，本論文在分時雙工的系統中，利用寬頻多載波直接序列分碼多重進接通訊技術以及MISO天線技術，並且結合空-頻通道預先處理器(Pre-RAKE)，即可獲得發射的分集增益，而在接收機方面可利用Matched Filter，解相關偵測器(decorrelating Detector) ，最小平方差偵測器(MMSE Detector)來處理多用戶之間的干擾(MAI) ，進而檢測出高速與高品質的資料。其中，分集增益將有助於提昇接收訊號的訊雜比品質與效益，並且具有可彈性改變調變模式、用戶台省電等優點。 本論文系統架構更進而符合未來接收機“輕薄短小又省電”的設計需求。 In the Future wireless communication system will develop to be broadband, higher transmit data rate, higher quality and multi-user. This thesis will discuss that omni-directional and broadband digital communication system that was combined time domain, frequency domain and space domain. We used Orthogonal Frequency Division Multiplexing (OFDM)-Code Division Multiple Access (CDMA) technology and Multiple-input single-output (MISO) and Pre-Rake technique to improve the performance. In the receiver, we used Matched Filter, Decorrelating Detector and Minimal Mean Square Error to process the problem of Multiple access interference (MAI). The system can have more higher transmit data rate and quality data information, the transmitter diversity can make up to improve signal to noise ratio, easily change modulation model and lower power for mobile station. However, We proposed system architecture can be small, light and lower power for future mobile station.
