应用于移动通信的根升余弦和升余弦脉冲成形滤波器的QPSK和OQPSK传输的性能比较
Comparison of Performance Metrics for QPSK and OQPSK Transmission Using Root Raised Cosine and Raised Cosine Pulse shaping Filters for Applications in Mobile Communication
摘要：
正交相移键控（QPSK）和偏移正交相移键控（OQPSK）是码分多址（CDMA）系统中两种广为接受的调制技术。脉冲成形滤波器在数字传输中起着重要的作用。所使用的脉冲成形滤波器的类型及其行为将影响通信系统的性能。这反过来又会对采用数字通信技术的移动通信系统的性能产生影响。在本文中，我们提出了一些性能参数或性能指标的数字通信系统，如误差矢量幅度（EVM），幅度误差，相位误差和带宽效率的QPSK传输系统的比较研究。根升余弦（RRC）和升余弦（RC）脉冲整形滤波器已用于比较。测量结果用作系统设计者的指南，以在QPSK调制的移动通信系统中选择具有滤波器滚降因子（α）的适当值的适当脉冲成形滤波器，以获得其不同性能度量的最佳值。
英文摘要：
Quadrature Phase Shift Keying (QPSK) and Offset Quadrature Phase Shift Keying (OQPSK) are two well accepted modulation techniques used in Code Division Multiple Access (CDMA) system. The Pulse Shaping Filters play an important role in digital transmission. The type of Pulse Shaping Filter used, and its behavior would influence the performance of the communication system. This in turn, would have an effect on the performance of the Mobile Communication system, in which the digital communication technique has been employed. In this paper we have presented comparative study of some performance parameters or performance metrics of a digital communication system like, Error Vector Magnitude (EVM), Magnitude Error, Phase Error and Bandwidth Efficiency for a QPSK transmission system. Root Raised Cosine (RRC) and Raised Cosine (RC) Pulse shaping filters have been used for comparison. The measurement results serve as a guideline to the system designer to select the proper pulse shaping filter with the appropriate value of filter roll off factor (a) in a QPSK modulated mobile communication system for optimal values of its different performance metrics.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
