摘要： 基于现有EPC-Gen2协议的Q算法，提出一种带俘获效应的Qext算法。在计算Q值的过程中，分别考虑空闲时隙和冲突时隙2种不同情形下的参数C，引入俘获效应计算参数C。实验结果表明，该算法能获得精确的Q值，高效地求得ALOHA协议下最佳帧尺寸，提高无线射频识别系统的识别性能。

关键词: EPC-Gen2协议, Qext算法, ALOHA协议, 俘获效应

Abstract: This paper proposes a Qext-algorithm with the capture effect according to the Q-algorithm introduced in EPC-Gen2 protocol. In process of computing the value of Q, it is proposed that parameter C should be taken into account independently for idle cases and collided cases. Capture effect is considered when computing parameter C. Experimental results show that this algorithm can get a more precise Q value, and an optimal frame size for ALOHA protocol can be acquired efficiently. It improves the identification performance of Radio Frequency Identification(RFID) system further.

Key words: EPC-Gen2 protocol, Qext-algorithm, ALOHA protocol, capture effect

中图分类号: 

• TP301.6