现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2013年
19期
33-36
,共4页
多进制相移键控%分集技术%协作通信%互信息转发方案
多進製相移鍵控%分集技術%協作通信%互信息轉髮方案
다진제상이건공%분집기술%협작통신%호신식전발방안
MPSK%diversity technique%cooperative communications%mutual information forwarding scheme
基于Rayleigh衰落信道，为保证信息传输的有效性和可靠性，对协作转发方案进行研究，提出了在多进制调制后的互信息转发方案，并将其与放大转发方案、检测转发方案、估计转发方案做误码率性能方面的比较。仿真实验结果表明：多进制相移键控调制后的互信息转发方案的误码率性能始终优于其他三种方案；当信噪比相同时，随着调制阶数的增加，数据率增大，可靠性降低，在需要一定传输速率的情况下，可牺牲一部分可靠性来换取传输的有效性。
基于Rayleigh衰落信道，為保證信息傳輸的有效性和可靠性，對協作轉髮方案進行研究，提齣瞭在多進製調製後的互信息轉髮方案，併將其與放大轉髮方案、檢測轉髮方案、估計轉髮方案做誤碼率性能方麵的比較。倣真實驗結果錶明：多進製相移鍵控調製後的互信息轉髮方案的誤碼率性能始終優于其他三種方案；噹信譟比相同時，隨著調製階數的增加，數據率增大，可靠性降低，在需要一定傳輸速率的情況下，可犧牲一部分可靠性來換取傳輸的有效性。
기우Rayleigh쇠락신도，위보증신식전수적유효성화가고성，대협작전발방안진행연구，제출료재다진제조제후적호신식전발방안，병장기여방대전발방안、검측전발방안、고계전발방안주오마솔성능방면적비교。방진실험결과표명：다진제상이건공조제후적호신식전발방안적오마솔성능시종우우기타삼충방안；당신조비상동시，수착조제계수적증가，수거솔증대，가고성강저，재수요일정전수속솔적정황하，가희생일부분가고성래환취전수적유효성。
In order to ensure the validity and reliability of information transmission,the cooperated forward scheme is ana-lyzed,and a scheme of mutual information forwarding executed after multi-system modulation is proposed based on Rayleigh fading channel,which is compared with amplify forwarding scheme,detect forwarding scheme and estimate forwarding scheme in bit the error rate performance. The simulation results show that the mutual information forwarding scheme based on MPSK modula-tion is always superior to the other schemes. When the signal-to-noise ratio is the same,with the increasing of the modulation or-der,the date rate increased,and the reliability of each scheme is reduced obviously. When the higher transmission rate is need,somereliability can be sacrificed to exchange for the validity of the transmission.
