Performance Analysis of Space-Time-Frequency Block Coding in OFDM Systems

In this paper, we conduct a detailed performance analysis of space-time-frequency block coding in OFDM systems and provide a comprehensive comparison between ST-OFDM and SFT-OFDM implementations. The study further examines the behavior of these coding schemes under various channel conditions and investigates their advantages in interference resistance capabilities. From an implementation perspective, space-time-frequency coding typically involves matrix operations for symbol encoding across multiple antennas and subcarriers, using algorithms like Alamouti coding extended to frequency domains. Our research results demonstrate that space-time-frequency block coding possesses significant potential for enhancing both reliability and capacity in OFDM systems. These coding techniques can play crucial roles in wireless communication applications, potentially implemented through MATLAB or Python simulations using functions for channel matrix calculation, orthogonal code generation, and maximum likelihood detection. The findings contribute to promoting further development and improvement in communication system design, particularly for 5G and beyond scenarios requiring robust spectral efficiency.