﻿ 基于改进型脉冲MPPSK调制的WSN节点建模分析 Modeling and Analysis of WSN Node Based on Improved Pulse MPPSK Modulation

Hans Journal of Wireless Communications
Vol.05 No.06(2015), Article ID:16484,7 pages
10.12677/HJWC.2015.56017

Modeling and Analysis of WSN Node Based on Improved Pulse MPPSK Modulation

Henjun Wang, Lenan Wu

Radio Engineering Department, Southeast University, Nanjing Jiangsu

Received: Nov. 7th, 2015; accepted: Nov. 28th, 2015; published: Dec. 8th, 2015

ABSTRACT

The nodes of Wireless Sensor Networks (WSN) are key part of the Internet of things. The life of the battery is an important factor which restricts its development. Pulse MPPSK modulation, which is suitable for the communication mode of WSN nodes, has a higher energy utilization rate than continuous MPPSK modulation. In this paper, we model the WSN node based on the improved pulse MPPSK modulation, and derive the formula of the energy consumption per bit. At the end of this paper, the simulation results are carried out according to the distance between the nodes.

Keywords:Improved Pulse MPPSK Modulation, WSN System Modeling

1. 引言

2. 常规和改进型脉冲MPPSK调制

2.1. 脉冲MPPSK调制

(1)

2.2. 改进型脉冲MPPSK调制

(2)

(3)

3. WSN系统模型分析[14]

(4)

Figure 1. Transmitter circuit

(5)

(6)

4. 基于改进型脉冲MPPSK的WSN节点分析

(7)

(8)

(9)

(10)

5. 仿真与分析

Table 1. Improved pulse MPPSK simulation parameters

Figure 3. Simulation of improved pulse MPPSK at different distances

Figure 4. Simulation of normal and improved MPPSK at same distances

6. 结束语

1) 本文根据传统WSN节点建模分析方式，对基于改进型脉冲MPPSK调制的WSN节点进行了系统建模，导出了单位比特能耗表达式；

2) 根据导出表达式进行了仿真验证，得到如下结论：当WSN节点彼此靠近时，缩短电路工作时间将是减少单位比特能耗的重要方法，而随着传输距离的增加，减少单位比特传输能耗则成为减少总单位比特能耗的重要方法，与公式相一致；

3) 改进型脉冲MPPSK调制的波形占空比有助于缩短电路工作时间，更好的解调性能则有利于减少单位比特传输能耗，比传统MPPSK更适于WSN节点的无线通信。

Modeling and Analysis of WSN Node Based on Improved Pulse MPPSK Modulation[J]. 无线通信, 2015, 05(06): 119-125. http://dx.doi.org/10.12677/HJWC.2015.56017

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