计算机工程与设计
計算機工程與設計
계산궤공정여설계
COMPUTER ENGINEERING AND DESIGN
2014年
10期
3373-3379
,共7页
无线信道%预均衡%迫零%频率选择性%奇异值分解
無線信道%預均衡%迫零%頻率選擇性%奇異值分解
무선신도%예균형%박령%빈솔선택성%기이치분해
wireless channel%pre-equalization%zero-forcing%frequency selectivity%singular value decomposition
面对复杂的无线信道干扰,提出一种低复杂度的频域预均衡技术,即迫零频域预均衡(zero-forcing frequency do-main pre-equalization ,ZF Pre-FDE)。应用基于此技术的收发器能够消除频率选择性信道带来的干扰效应,在传输误码率方面也较传统收发器有所改善。通过计算机仿真比较了所选方法与传统方法在同样环境中的误码率,仿真结果表明,基于此均衡技术的收发器能够很好地改善系统误码性能,利用奇异值分解,降低了实现的复杂度。
麵對複雜的無線信道榦擾,提齣一種低複雜度的頻域預均衡技術,即迫零頻域預均衡(zero-forcing frequency do-main pre-equalization ,ZF Pre-FDE)。應用基于此技術的收髮器能夠消除頻率選擇性信道帶來的榦擾效應,在傳輸誤碼率方麵也較傳統收髮器有所改善。通過計算機倣真比較瞭所選方法與傳統方法在同樣環境中的誤碼率,倣真結果錶明,基于此均衡技術的收髮器能夠很好地改善繫統誤碼性能,利用奇異值分解,降低瞭實現的複雜度。
면대복잡적무선신도간우,제출일충저복잡도적빈역예균형기술,즉박령빈역예균형(zero-forcing frequency do-main pre-equalization ,ZF Pre-FDE)。응용기우차기술적수발기능구소제빈솔선택성신도대래적간우효응,재전수오마솔방면야교전통수발기유소개선。통과계산궤방진비교료소선방법여전통방법재동양배경중적오마솔,방진결과표명,기우차균형기술적수발기능구흔호지개선계통오마성능,이용기이치분해,강저료실현적복잡도。
Facing the complex wireless channel interference ,a modified method was proposed ,namely zero-forcing frequency do-main pre-equalization (ZF Pre-FDE) ,which can eliminate the effect of interference brought by the frequency selective channel used in transceivers of the system .The bit error rate (BER) was compared among the proposed method and traditional methods . An simulation example was presented to prove that the proposed equalization technique can improve the BER performance better , and using singular value decomposition (SVD) ,the complexity is reduced ,consequently demonstrates the feasibility of the tech-nique and the effectiveness of the algorithm .