摘要：该文基于多比特的量化策略,提出了无线传感器网络中多比特分布式滚动时域状态估计算法。每个传感器节点预先设定一个包含多个阈值的阈值簿,利用这个阈值簿将观测值量化成多比特,融合中心接收这些比特信息运用滚动时域的思想得到系统的状态估计值,与预期相同。仿真结果表明阈值簿中阈值个数越多则估计的结果会越精确。与单比特滚动时域状态估计方法相比,该方法避免了每一时刻传感器节点接收融合中心的反馈状态估计值用来设计阈值,并且在多比特信息下状态估计值的精度更高。

摘要：雷达技术的进步 ,对多比特相位量化数字射频存贮提出要求 .讨论相位量化数字射频存贮的关键器件———模数变换器 (亦称相位量化器 )的优化设计方法 .以 4bit相位量化为例 ,提出相位量化器的拓扑结构和编码方法 .该拓扑结构具有对称性 ,消除负载不平衡对量化精度的影响 ;编码的目的在于减少贮频信道数 ,简化数字射频存贮的结构 .

摘要：A multi-bit antifuse-type one-time programmable (OTP) memory is designed, which has a smaller area and a shorter programming time compared with the conventional single-bit antifuse-type OTP memory. While the conventional antifuse-type OTP memory can store a bit per cell, a proposed OTP memory can store two consecutive bits per cell through a data compression technique. The 1 kbit OTP memory designed with Magnachip 0.18 μm CMOS (complementary metal-oxide semiconductor) process is 34% smaller than the conventional single-bit antifuse-type OTP memory since the sizes of cell array and row decoder are reduced. And the programming time of the proposed OTP memory is nearly 50% smaller than that of the conventional counterpart since two consecutive bytes can be compressed and programmed into eight OTP cells at once. The layout area is 214 μm×327 μm, and the read current is simulated to be 30.4 μA.