ofdm 仿真的程序，包括参数定义，fft，ifft，调制解调等源码，很好用啊！-OFDM simulation procedures, including the definition of parameters, fft, ifft, modulation and demodulation, such as source code, with very good ah!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.262327s ]
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:0.131817s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001190s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001147s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000918s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.002975s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000832s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003764s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.020535s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001205s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 145327 [ RunTime:0.013304s ]
