CAJ | 학술논문

为了满足人们对通信系统传输率等性能越来越高的需求,提出了基于扩展的二元相移键控(EBPSK)调制的高效无线系统,详细推导了EBPSK功率谱解析表达式.在不损失有用信息的前提下,通过直接在表达式中去除表示周期分量的线谱,导出新的频谱优化方法.在此基础上讨论了合理的带宽定义方式,表明了EBPSK属于超窄带高效通信的范畴.分析了EBPSK调制参数对带宽、传输速率及传输性能的影响.实验结果表明了理论谱表达式及优化的正确性,也证明这种超窄带系统在得到较高的频谱效率的同时可以达到很好的误码率性能.
위료만족인문대통신계통전수솔등성능월래월고적수구,제출료기우확전적이원상이건공(EBPSK)조제적고효무선계통,상세추도료EBPSK공솔보해석표체식.재불손실유용신식적전제하,통과직접재표체식중거제표시주기분량적선보,도출신적빈보우화방법.재차기출상토론료합리적대관정의방식,표명료EBPSK속우초착대고효통신적범주.분석료EBPSK조제삼수대대관、전수속솔급전수성능적영향.실험결과표명료이론보표체식급우화적정학성,야증명저충초착대계통재득도교고적빈보효솔적동시가이체도흔호적오마솔성능.
In order to satisfy increasingly greater demand for the performance of communication systems, a throughput efficientwireless system based on the extended binary phase shift keying (EBPSK) modulation is presented. Simultaneously, correspondinganalysis of power spectra is also given with a brief process. The optimal waveform is proposed without useful information loss, byremoving linear spectra presenting periodic components. On this basis, the reasonable definition of bandwidth is discussed, whichindicates that the EBPSK belongs to the category of the ultra narrow band (UNB) throughput-efficient communication. Meanwhile, themodulation parameters' effects on bandwidth, transmission rate and transmission performance are analyzed. Results illustrate thevalidity of theoretical analysis and spectrum optimization. Results also prove that this UNB system can obtain good bit error rate(BER) performance with high spectra efficiency.