The Constellation Modification in Frequency Multiplication on MPSK Data Transmission

Abstract

This research aims to introduce an innovative method of constellation modification in MPSK data transmission through utilization of frequency multiplication. This method presents a significant solution for providing efficient data transmission in millimeter wave frequency band, addressing the requisites for high data rates and capacity. However, the application of frequency multiplication to MPSK signal causes problems wherein data recovery becomes unattainable due to nonlinearity. Hence, a modified MPSK modulator is developed. Along with the standard MPSK modulator, back-to-back and line-of-sight (LOS) measurements of the modified MPSK modulator are performed. To conduct the standard and modified MPSK modulators in real-time, the development of transmitter and receiver blocks is undertaken using LabVIEW and experimentation is performed employing the SDRs. Comparative analysis reveals that the modified MPSK modulator, conceived through the proposed method, yields improvement in error performance while mitigating the computational burden from digital processing. Importantly, these enhancements are achieved without necessitating alterations in receiver. BER results for measurements of standard and modified MPSK are obtained. The findings substantiate the effectiveness of the proposed method, manifesting a discernible enhancement in error performance. This method proves appropriate for MPSK data in experimental millimeter wave band investigations utilizing frequency multiplier chains.

Keywords

• constellation modification
• frequency multiplication
• millimeter wave communication
• phase shift keying
• 5g mobile communication