课题在此平台上实现ASK 调制，通过 Monte Carlo 仿真实现 16QAM 调制，对比 ASK 和 16QAM 两种调制方式，分析能使 RFID 系统性能最佳的数字调制方式，能进一步提高系统的可扩展性和可维护性，有效的缩短开发时间、降低了设计成本。通过搭建软件无线电平台构建 RFID 系统，能够用有限的资源，更进一步研究 RFID系统物理层和 MAC 层性能，对 RFID 系统性能的提高提供了理论及验证平台。
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002046s ]
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:0.087845s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002296s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001936s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002004s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005674s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002106s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003220s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016229s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002401s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 286830 [ RunTime:0.001212s ]
