A comparison of modified periodogram and Blackman-Tucky methods for wideband receiver applications

Abstract

A wideband receiver is designed to detect signals over a broad bandwidth. To increase the receiver's capability of detecting multiple signals, it is a common practice to apply a window to reduce spectral leakage. The modified periodogram applies a window before autocorrelation and Blackman-Tucky method applies the window after autocorrelation. To the best of authors' knowledge, no one has compared the performance difference in the context of wideband receiver applications. This study finds that the modified periodogram can better enable a receiver to detect multiple signals with a significant power difference at the expense of reduced frequency resolution and sensitivity.

A novel accurate and low-complexity behavior model for IMUX-HPA-OMUX of LEO satellite based on iterative compensation of cascade modeling errors

“…However, the obvious nonlinearity of specific satellite channel components such as Input Multiplexing (IMUX) filter, High Power Amplifier (HPA) and Output Multiplexing (OMUX) filter will lead to serious signals degradation. Therefore, accurate behavioral modeling of IMUX-HPA-OMUX (IHO) is the most important technology of NGSC design and its efficiency improvement [9,10,11,12,13]. Traditional independent behavioral modeling methods of IHO are difficult to quantify intrinsic modeling errors and cumulative modeling errors.…”