在分析现有算法的基础上, 提出了一种新的算法, 并对其进行了仿真Z仿真结果表明, 无论是 在多径信道还是在AW GN 信道, 该算法的定时估计和频率偏移估计的均方差都要优于最大似然 算法和“集相关”算法Z-O FDM is sen sit ive to t im ing recovery and f requency offset est imat ion, cu rren t non2data2aided est imat ion methods don’t wo rk w ell

】从实践和理论角度汇总了W indow s 下异步串行通信编程的基本规律和常见方法, 指出了各种编程方法 的优势和不足, 重点阐述了如何扬长避短、综合应用各种方法编程实现可靠而高效的串行数据通信, 突出说明 了怎样使用“特定通信协议和定时机制、多线程优化和W inA P I”的最优串行编程的数据接收过程实现。 -T he p ap er co llects the ru les and m ethods abou t the serial comm un ication

poj3342 Dear Contestant, I m going to have a party at my villa at Hali-Bula to celebrate my retirement from BCM. I wish I could invite all my co-workers, but imagine how an employee can enjoy a party when he finds his boss among the guests! So

从1-p^2-1中找出与p互素的元素，计算1-p^2-1模p的值，并按模值分类。已验证p=5,7。-Find numbers 1-p^2-1 which is co-prime to p，compute values mod p, and classify them according to values mod p.