本文是一篇经典的基于离散余弦变化的信道估计论文，摘自IEEE的文章，对初学者有帮助。-This article is a classic change based on the discrete cosine channel estimation papers, taken from the IEEE article, for beginners helpful.
文 件 列 表
efficient channel estimation based on discrete cosine transform.PDF
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001317s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.106516s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001334s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001975s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001319s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003570s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001073s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003207s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.021684s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001319s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 169805 [ RunTime:0.001187s ]
