A receiver is a device or system that receives and decodes incoming signals transmitted over a communication channel. In the context of research, the study of receivers typically focuses on designing, optimizing, and analyzing the performance of receivers in different communication systems, such as wireless communication, satellite communication, and optical communication. Research in this area often involves developing algorithms and techniques for improving signal reception, reducing interference, enhancing signal quality, and increasing data throughput. Receiver research may also involve investigating new modulation schemes, error correction coding techniques, and signal processing methods to enhance the performance of communication systems. Overall, the research on receivers plays a critical role in advancing communication technologies and improving the efficiency and reliability of communication systems in various applications.