Paper Title
Solving and Increasing the Flexibility and Adaptability of SDR and Making it Reconfigurable and Efficient

Abstract
This project presents a fully software-based Software-Defined Radio (SDR) system designed in MATLAB to enhance flexibility, adaptability, reconfigurability, and efficiency without relying on hardware or FPGA platforms. A modular SDR architecture supporting multiple modulation schemes and OFDM is developed, along with an adaptive modulation controller that adjusts transmission parameters based on real-time SNR. The system is evaluated under AWGN and Rayleigh fading channels using BER and throughput metrics. Results demonstrate that the proposed SDR can dynamically adjust its waveform, maintain reliable communication across varying conditions, and operate efficiently through optimized MATLAB implementations. The design successfully achieves a flexible, adaptive, and reconfigurable SDR suitable for modern wireless communication studies. Keywords - Software-Defined Radio; Reconfigurable SDR; Adaptive Modulation; MATLAB Simulation; BPSK, QPSK, 16-QAM, and OFDM; BER Analysis; System Efficiency.