In the design of wireless communications links between two sites, issues of range, throughput, and received signal quality are of critical importance to the system engineer. Link budget analysis accounts for all gains and losses in the communication link. Some factors and design choices, such as propagation path length, signal polarization, and antenna feed cable, degrade signal quality, while others, such as the power amplifier and antenna size, can increase transmitted signal strength.

Use a comm.EVM System object™ to measure the error vector magnitude (EVM) of a simulated IEEE® 802.15.4 [ 1 ] transmitter. IEEE 802.15.4 specifies protocols used for ZigBee® wireless personal area networks.

Measure and calibrate for the frequency offset between a transmitter and a receiver at the receiver using MATLAB® and Communications Toolbox™. You can either use captured signals or receive signals in real time using theRTL-SDR无线电的通信工具箱支持包金宝app。The receiver monitors the received signal, calculates the frequency offset between the transmitter and the receiver and displays it in the MATLAB® command window.

使用Simulink®和Communications Toolbox™测量和校准接收器的发射机/接收器频率偏移。金宝app您可以使用RTL-SDR收音机的通信工具箱支持软件包实时使用捕获的信号或实时接收信号。金宝app接收器监视接收的信号，计算并显示发射器/接收器频率偏移。