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In this paper, based on the application of the sum-product (SP) algorithm to factor graphs (FGs), we investigate two optimal equalization algorithms, i.e., unconstrained linear equalization and constrained linear equalization for intersymbol interference (ISI) channels, both of which use the criterion of LMMSE. From simulations we know, the MSE performance of these two algorithms is much better than...
In RFID systems, tag anti-collision algorithm is significantly important for fast tag identification, especial in mobile scenarios. In this paper, we propose group strategy for remaining tags algorithm (GSRA for short). The theoretic analysis shows that the system efficiency only concerns rate of migration and static system efficiency, and is not related with the number of tags. The simulation result...
Tag collision presents a significant impact on RFID systems. In this letter, we propose an efficient tag anti-collision protocol termed the adaptive assigned tree slotted Aloha anti-collision (AdATSA) protocol. In this protocol, the binary grouping and adaptive recognition phases are employed to effectively estimate the tag number and promptly identify tags. Additionally, we further improve the system...
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