计算机工程
計算機工程
계산궤공정
COMPUTER ENGINEERING
2015年
2期
308-312
,共5页
射频识别%防碰撞算法%吞吐率%二进制码调制算法%多叉树%位跟踪技术
射頻識彆%防踫撞算法%吞吐率%二進製碼調製算法%多扠樹%位跟蹤技術
사빈식별%방팽당산법%탄토솔%이진제마조제산법%다차수%위근종기술
Radio Frequency Identification ( RFID )%anti-collision algorithm%throughput%Binary Code Modulation Algorithm( BCMA)%multi-branch tree%bit tracking technique
针对射频识别( RFID)标签防碰撞算法识别效率低的问题,提出一种基于二进制码调制的RFID标签防碰撞算法BCMA。对传统多叉树防碰撞算法进行改进,活动标签采用位编码技术把标签ID在多叉数中的位置信息调制到一个2m位的二进制数主控继电器(MCR)上,并把MCR回送给阅读器；阅读器采用位跟踪技术,定位MCR碰撞发生的数位,从而解调出活动标签的分组信息。阅读器对待识别标签的分组是确定性的,进而避免空闲时隙的产生,提高系统识别效率。仿真结果表明,与常见的八叉树算法相比,BCMA算法使系统吞吐率提高168%。
針對射頻識彆( RFID)標籤防踫撞算法識彆效率低的問題,提齣一種基于二進製碼調製的RFID標籤防踫撞算法BCMA。對傳統多扠樹防踫撞算法進行改進,活動標籤採用位編碼技術把標籤ID在多扠數中的位置信息調製到一箇2m位的二進製數主控繼電器(MCR)上,併把MCR迴送給閱讀器；閱讀器採用位跟蹤技術,定位MCR踫撞髮生的數位,從而解調齣活動標籤的分組信息。閱讀器對待識彆標籤的分組是確定性的,進而避免空閒時隙的產生,提高繫統識彆效率。倣真結果錶明,與常見的八扠樹算法相比,BCMA算法使繫統吞吐率提高168%。
침대사빈식별( RFID)표첨방팽당산법식별효솔저적문제,제출일충기우이진제마조제적RFID표첨방팽당산법BCMA。대전통다차수방팽당산법진행개진,활동표첨채용위편마기술파표첨ID재다차수중적위치신식조제도일개2m위적이진제수주공계전기(MCR)상,병파MCR회송급열독기；열독기채용위근종기술,정위MCR팽당발생적수위,종이해조출활동표첨적분조신식。열독기대대식별표첨적분조시학정성적,진이피면공한시극적산생,제고계통식별효솔。방진결과표명,여상견적팔차수산법상비,BCMA산법사계통탄토솔제고168%。
To improve the identification efficiency and reduce the communication overhead,a novel algorithm,Binary Code Modulation Algorithm( BCMA) is proposed. BCMA works as follows:the activated tag generates and sends back a 2m bit binary code,Master Control Relay(MCR),on which the location information of the tag’s ID in the multi-branch tree is modulated. After receiving the MCR,the reader finds out the collided bits,demodulates the branch information,and groups the tags into determinate subsets. It is obvious that BCMA avoids generating idle slots. Analysis results and simulations show that compared with other existing multi-branch algorithms, as the common octree algorithm, BCMA improves the system throughput by 168% .
