一种基于时分的EBPSK多载波实现方式

发布时间：2018-10-19 17:40

【摘要】：为了实现扩展的二元相移键控(EBPSK)调制的多载波传输,提出了一种基于时分的EBPSK多载波实现方式.首先,利用叠加原理,通过观察冲击滤波器的输出波形,分析了多路EBPSK信号间干扰的原因;然后,给出了消除信号间干扰的具体思路,即将临道信号相对延迟,使各路载波的判决区域在时间上区分开,避免判决区域的碰撞;最后,通过仿真,对比了不同时间保护间隔下基于时分的EBPSK多载波与单载波的误码率性能.仿真结果表明,时间保护间隔为0时干扰较大,多载波的误码率性能较差.在合适的时间保护间隔下,多载波的误码率性能几乎与单载波一致.基于时分的EBPSK多载波实现方式能够有效消除各路EBPSK信号间的干扰,使得多路EBPSK信号同时传输且误码率性能损失不明显.
[Abstract]:In order to realize the extended binary phase-shift keying (EBPSK) modulation multicarrier transmission, a time-division based EBPSK multicarrier implementation method is proposed. First of all, by observing the output waveform of impulse filter, the reason of multi-channel EBPSK signal interference is analyzed by using superposition principle, and then the concrete idea of eliminating inter-signal interference is given, that is, the relative delay of impending signal. The decision region of each carrier is distinguished in time to avoid the collision of the decision region. Finally, through simulation, the BER performance of EBPSK multicarrier and single carrier in different time protection interval is compared. The simulation results show that when the time protection interval is 0, the interference is large and the BER performance of multi-carrier is poor. The BER performance of multicarrier is almost consistent with that of single carrier at the appropriate time protection interval. The EBPSK multi-carrier implementation based on time division can effectively eliminate the interference between various EBPSK signals, which makes the multi-channel EBPSK signals transmit simultaneously and the BER performance loss is not obvious.
【作者单位】：东南大学信息科学与工程学院;
【基金】：国家自然科学基金资助项目(61271204)
【分类号】：TN911.3

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