Channel Estimation for Hybrid Architecture-Based Wideband Millimeter Wave Systems

摘要: Hybrid analog and digital precoding allows millimeter wave (mmWave) systems to achieve both array multiplexing gain. The design of the hybrid precoders combiners, though, is usually based on knowledge channel. Prior work mmWave channel estimation with architectures focused narrowband channels. Since will be wideband frequency selectivity, it vital develop solutions for architectures-based systems. In this paper, we a sparse formulation compressed sensing-based problem architectures. First, leverage structure frequency-selective channels formulate as recovery in time domains. Then, propose explicit techniques purely or domains combined time/frequency Our are suitable single carrier-frequency domain equalization orthogonal frequency-division Simulation results show that proposed good quality, while requiring small training overhead. Leveraging architecture at transceivers gives further improvement error performance achievable rates.