无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2014年
9期
35-37,62
,共4页
Turbo均衡%SUI信道%单载波调制%信道估计
Turbo均衡%SUI信道%單載波調製%信道估計
Turbo균형%SUI신도%단재파조제%신도고계
Turbo equalization%SUI channel%single carrier modulation%channel estimation
Turbo均衡能够通过迭代的方式对接收信号进行多次均衡与信道解码处理，从而提高接收机性能。在SUI信道下，对采用单载波调制体制进行信息传输的Turbo均衡性能进行了仿真研究。系统通过对引导符号序列在频域进行基于MMSE准则的信道估计，获取SUI信道的信息，在时域进行基于线性MMSE准则的Turbo均衡处理。 Matlab仿真结果表明，相对于传统的单载波频域均衡方案， Turbo均衡的方案显著提高了整个传输系统的抗衰落性能。
Turbo均衡能夠通過迭代的方式對接收信號進行多次均衡與信道解碼處理，從而提高接收機性能。在SUI信道下，對採用單載波調製體製進行信息傳輸的Turbo均衡性能進行瞭倣真研究。繫統通過對引導符號序列在頻域進行基于MMSE準則的信道估計，穫取SUI信道的信息，在時域進行基于線性MMSE準則的Turbo均衡處理。 Matlab倣真結果錶明，相對于傳統的單載波頻域均衡方案， Turbo均衡的方案顯著提高瞭整箇傳輸繫統的抗衰落性能。
Turbo균형능구통과질대적방식대접수신호진행다차균형여신도해마처리，종이제고접수궤성능。재SUI신도하，대채용단재파조제체제진행신식전수적Turbo균형성능진행료방진연구。계통통과대인도부호서렬재빈역진행기우MMSE준칙적신도고계，획취SUI신도적신식，재시역진행기우선성MMSE준칙적Turbo균형처리。 Matlab방진결과표명，상대우전통적단재파빈역균형방안， Turbo균형적방안현저제고료정개전수계통적항쇠락성능。
Turbo equalization is an iterative process that repeats equalization and channel decoding to improve receiver perform-ance.The performance of Turbo equalization over SUI channels when using single carrier modulation to transmit information is simulated and researched.The information of SUI channel is obtained through MMSE criterion based channel estimation in frequency domain over pilot symbol sequence,and linear MMSE based Turbo equalization in time domain is carried out.The results of Matlab simulation indi-cate that Turbo equalization can apparently improve the anti-fading performance of the transmission system compared with the traditional solution of SC-FDE.
