| US 7,483,504請求項1 |
| 1. A method for propagating multiple input multiple output (MIMO) over a distributed antenna system (DAS) network, comprising the steps of: 一項用來在分散式天線系統(DAS)網路上傳遞多重輸入多重輸出(MIMO)的方法，其包括以下步驟 |
| a) providing a plurality n of original MIMO signals;a) 提供複數n個原始MIMO訊號 |
| b) at a first endpoint of the DAS network, frequency shifting n-1 of the MIMO signals into signals with n-1 separate frequencies, with one MIMO signal left un-shifted in frequency; b) 在DAS網路的第一個端點，將n-1個MIMO訊號頻移成具備n-1個不同頻率的訊號，僅讓一個MIMO訊號不受頻移 |
| c) propagating the n-1 frequency shifted signals and the un-shifted frequency signal together over a single coaxial cable extending for at least part of a path from the first endpoint to a second endpoint of the DAS network; and c) 一併傳遞n-1個經頻移訊號與未受頻移訊號，其傳遞是透過一個至少部分通道是從前述第一個端點連接到DAS網路上第二個端點的單一同軸電纜， |
| d) at the second endpoint, reconstructing the original MIMO signals.d) 在前述第二個端點，重組前述原始MINO訊號 |
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| US 5,969,837請求項1 |
| 1. A communications station comprising: 一項通訊站，包括 |
| a base unit comprising: 一基地單元，包括 |
| a communications interface for communicating with plural wireless communications networks; 一通訊介面，用來與複數無線通訊網路進行通訊 |
| wherein the plural wireless communications networks comprise at least two communications networks selected from the group consisting of cellular telephone networks, cordless telephones wide area data networks wireless local area networks, personal communications systems, personal communications networks, paging/messaging networks and satellite mobile systems; 其中前述複數無線通訊網路包括至少兩個通訊網路，其從包含蜂巢式電話網路、無線電話廣域資料網路、無線區域網路、個人通訊系統、個人通訊網路、傳呼/訊息網路與衛星行動系統等之群組中選出 |
| a received communications combiner for combining received analog communications signals received from said plural wireless communications networks into a single radio frequency analog output; 一接收通訊合併器，用來將接收自前述複數無線通訊網路之類比通訊訊號，合併成為一單一射頻類比輸出 |
| a transmit communications splitter for splitting previously combined transmit analog communications signals to be transmitted to said plural wireless communications networks into plural radio frequency analog outputs; 一傳送通訊分配器，用來把將被傳送至前述複數無線通訊網路上、先前經合併之傳送類比通訊訊號，分配成複數射頻類比輸出 |
| at least one fiberoptic transmitter receiving said single radio frequency analog output and providing a corresponding optical output; and 至少一個光纖傳送器接收前述單一射頻類比輸出並提供一對應之光學輸出 |
| at least one fiberoptic receiver receiving an optical input and providing an RF analog output containing previously combined transmit analog communications signals; 至少一個光纖接收器接收一光學輸出並提供一包含先前經合併之傳送類比通訊訊號的射頻類比輸出 |
| a plurality of remote units, each comprising: 複數遠端單元，個別均包括 |
| plural antennas for communicating with communicators along plural wireless communications networks; 複數天線，用來透過複數無線通訊網路與通訊器進行通訊 |
| a received communications splitter for splitting previously combined received analog communications signals from said base unit and supplying them to said plural antennas; 一接收通訊分配器，用來分配先前經合併、從前述基地單元所接收之類比通訊訊號，並將其提供給前述複數天線 |
| a transmit communications combiner for combining transmit analog communications signals from said plural antennas into a combined radio frequency analog output; 一傳送通訊合併器，用來將來自前述複數天線之傳送類比通訊訊號合併成一經合併射頻類比輸出 |
| a fiberoptic transmitter receiving said combined radio frequency analog output and providing a corresponding optical output; and 一光纖傳送器，接收前述經合併射頻類比輸出並提供一對應之光學輸出 |
| a fiberoptic receiver receiving an optical input and providing an RF analog output to said received communications splitter containing previously received transmit analog communications signals; 一光纖接收器，接收一光學輸出並提供一包含先前所接收傳送類比通訊訊號之射頻類比輸出至前述接收通訊分配器 |
| a first optical fiber connecting each fiberoptic transmitter of said base unit with a corresponding fiberoptic receiver in a corresponding remote unit; and 一第一光纖，連接前述基地單元之個別光纖傳送器至對應之遠端單元上的對應光纖接收器 |
| a second optical fiber connecting each fiberoptic transmitter of a remote unit with a corresponding fiberoptic receiver in said base unit; and 一第二光纖，連接遠端單元之個別光纖傳送器至前述基地單元之對應光纖接受器 |
| wherein a low frequency control signal is multiplexed by said communications interface onto said optical fiber for providing loop back alarm status of each remote unit and for providing control signals thereto, which control amplifier gain and balance thereof.其中一低頻控制訊號被前述通訊介面多工化到前述光纖上，用來提供個別遠端單元之回送警示狀態，並用來提供控制訊號給遠端單元，控制遠端單元之放大器增益與平衡 |
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