Theoretical and Practical Limits to Sensitivity in IEEE 802.15.4 Receivers
Theoretical and Practical Limits to Sensitivity in IEEE 802.15.4 Receivers
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DOI：
10.1109/icecs.2007.4511247
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发表时间：
2007-12
期刊：
影响因子：
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通讯作者：
S. Lanzisera;K. Pister
中科院分区：
文献类型：
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作者：
S. Lanzisera;K. Pister
本文讨论了IEEE 802.15.4标准的2.4 GHz物理层的无线个人区域和传感器网络的性能限制。随着设计人员开始考虑增加功率放大器以提高链路裕度，其他不会显著增加功率的方法也具有很高的价值。最小化功耗是802.15.4系统的关键目标，灵敏度的提高可以换取功耗节省。从通信理论的限制进行了比较，常见的系统拓扑结构的性能，并通过仿真来讨论和验证，为提高系统性能，而不显着的成本的方法。约6.6 dB的灵敏度被证明是常见的牺牲，和5.8 dB是可恢复的，而不会大幅增加设计的复杂性。
This paper addresses the performance limits of the IEEE 802.15.4 standard 2.4 GHz PHY for wireless personal area and sensor networks. As designers start considering the addition of power amplifiers to improve link margin, other methods that do not increase power significantly are of high value. Minimizing power consumption is the key goal of 802.15.4 systems, and improvements in sensitivity can be traded for power savings. The limits from communication theory are compared to the performance of common system topologies, and methods for improving system performance without significant cost are discussed and verified through simulation. Approximately 6.6 dB of sensitivity is shown to be commonly sacrificed, and 5.8 dB is recoverable without large increases in design complexity.