计算机工程与应用
計算機工程與應用
계산궤공정여응용
Computer Engineering and Applications
2015年
22期
95-98
,共4页
非合作通信%盲均衡%分数间隔%数据重用%变步长
非閤作通信%盲均衡%分數間隔%數據重用%變步長
비합작통신%맹균형%분수간격%수거중용%변보장
non-cooperative communication%blind equalization%fractionally-spaced%data reuse%variable step size
针对在非合作通信中无线信道下短消息侦测及接收的问题,提出了一种改进的盲均衡算法,该算法在T/4分数间隔恒模算法(T/4-FSE-CMA)的基础上引入了数据重用和变步长方法,数据重用可以大大减小收敛所需的码元数,而变步长能够进一步提高算法的精度。仿真结果表明,改进后的算法较现有的T/4-FSE-CMA算法和数据重用恒模算法有更快的收敛速度和更高的稳态精度,误码率也明显降低,具有很大的工程应用价值。
針對在非閤作通信中無線信道下短消息偵測及接收的問題,提齣瞭一種改進的盲均衡算法,該算法在T/4分數間隔恆模算法(T/4-FSE-CMA)的基礎上引入瞭數據重用和變步長方法,數據重用可以大大減小收斂所需的碼元數,而變步長能夠進一步提高算法的精度。倣真結果錶明,改進後的算法較現有的T/4-FSE-CMA算法和數據重用恆模算法有更快的收斂速度和更高的穩態精度,誤碼率也明顯降低,具有很大的工程應用價值。
침대재비합작통신중무선신도하단소식정측급접수적문제,제출료일충개진적맹균형산법,해산법재T/4분수간격항모산법(T/4-FSE-CMA)적기출상인입료수거중용화변보장방법,수거중용가이대대감소수렴소수적마원수,이변보장능구진일보제고산법적정도。방진결과표명,개진후적산법교현유적T/4-FSE-CMA산법화수거중용항모산법유경쾌적수렴속도화경고적은태정도,오마솔야명현강저,구유흔대적공정응용개치。
A new blind equalization algorithm is proposed for short message detection and reception in non-cooperative communication. Based on the T/4 fractionally-spaced constant modulus algorithm(T/4-FSE-CMA), the new algorithm introduces data reuse method and variable step size idea. Data reusing can sharply reduce the number of symbol that need to converge. Variable step size can further improve the accuracy of the algorithm. Simulation results show, compared with T/4-FSE-CMA and Data Reuse CMA(DR-CMA), the new algorithm has faster convergence speed and higher steady-state accuracy, as well as a lower BER. The new algorithm has great engineering application value.