CAJ | 학술논문

突发模式通信应用日益广泛，基于前导字的解调算法降低了系统的数据传输效率。提出了一种适于多速率突发信号的全数字无前导字解调方案，通过FIFO操作和采样率转换适应多种速率的要求，参数估计、定时同步和载波恢复均采用前向算法，可以在不损失任何数据符号的条件下完成解调，具有较高的数据传输效率。算法易于硬件实现，给出了仿真和硬件测试的结果，结果显示在中高信噪比条件下算法具有较好的性能，验证了算法的有效性和可靠性。
돌발모식통신응용일익엄범，기우전도자적해조산법강저료계통적수거전수효솔。제출료일충괄우다속솔돌발신호적전수자무전도자해조방안，통과FIFO조작화채양솔전환괄응다충속솔적요구，삼수고계、정시동보화재파회복균채용전향산법，가이재불손실임하수거부호적조건하완성해조，구유교고적수거전수효솔。산법역우경건실현，급출료방진화경건측시적결과，결과현시재중고신조비조건하산법구유교호적성능，험증료산법적유효성화가고성。
The application of burst-mode communication becomes even popular. The demodulator with pre-amble may reduce data transmission efficiency of the system. A scheme of full-digital burst-mode demod-ulator without preamble suitable for multiple symbol rates is proposed. FIFO operation and sampling rate conversion applicable to multiple symbol rates are designed. Feedforward algorithm is suggested for param-eter estimation, timing synchronization and carrier recovery, the demodulation and high data transmission efficiency could be done without any loss of data symbols. The algorithm is easy to implement on hardware platform, and the results of simulation and hardware test indicate its effectiveness and reliability in the en-vironment of moderate and high SNR.