Simulation of PAPR Reduction Using PTS Technique in STBC MIMO OFDM Systems

This work focuses on simulating Peak-to-Average Power Ratio (PAPR) reduction using the Partial Transmit Sequence (PTS) technique within STBC MIMO OFDM frameworks. PAPR mitigation is critical in wireless communication systems to prevent signal distortion and power amplifier inefficiencies. The PTS method implementation typically involves partitioning OFDM symbols into disjoint subblocks, applying phase rotation factors to each subblock, and selecting the optimal combination that minimizes PAPR through combinatorial optimization algorithms. STBC (Space-Time Block Coding) enhances MIMO (Multiple-Input Multiple-Output) system performance by providing spatial diversity gain and improved resilience against channel fading effects. In code implementation, STBC encoding matrices are applied across multiple transmit antennas to ensure orthogonal transmission patterns. OFDM (Orthogonal Frequency Division Multiplexing) employs inverse fast Fourier transform (IFFT) operations to modulate data across orthogonal subcarriers, while guard intervals using cyclic prefix (CP) combat inter-symbol interference. The integrated simulation involves configuring MIMO-OFDM parameters (subcarrier count, modulation scheme, antenna configuration), implementing PTS optimization with phase factor computations, and evaluating PAPR performance using complementary cumulative distribution function (CCDF) metrics. Key functions include subblock partitioning algorithms, phase factor optimization routines, and STBC encoding/decoding modules. This simulation framework enables quantitative assessment of PAPR reduction effectiveness and system performance trade-offs for practical wireless communication deployments.