為了充分利用光信號(hào)的寬帶寬資源和提高信道利用率，完成線速率為2.5 Gb/s的多路信號(hào)高速傳輸，在FPGA上設(shè)計(jì)并實(shí)現(xiàn)了一種時(shí)分復(fù)用通信系統(tǒng)，并對(duì)其功能和性能進(jìn)行了測(cè)試與驗(yàn)證。為了克服普通FPGA傳輸速率低于1 Gb/s的性能缺陷，選用了Xilinx內(nèi)嵌了支持3.75 Gb/s最高傳輸速率的吉比特收發(fā)器的高速FPGA。最終測(cè)試結(jié)果表明，在短距離有線傳輸條件下，該系統(tǒng)成功實(shí)現(xiàn)了線速率為2.5 Gb/s的無誤碼的時(shí)分復(fù)用通信。

　　Abstract:

　　To take full advantage of wide bandwidth of optical signal and improve utilization of channel resources， a TDM(Time-Divided Multiplexing) communication system in FPGA was designed to implement high speed transmission of multipath in the line rate of 2.5Gb/s. System functionality and performance were also tested and verified. To overcome the performance defect of common FPGA that its transfer rate is lower than 1Gb/s， Xilinx high-speed FPGA which embedded MGT(Multi-Gigabit Transceiver) that supported the highest data rate of 3.75Gb/s was used. Test shows that under short-distance wire transmission condition， the system successfully achieves TDM communication of no error-code， and line rate is up to 2.5Gb/s.

?