Implementation of Costas Loop in a Communication Receiver

Costas loop is a carrier phase synchronization solution devised by John Costas at General Electric Company in 1956. It had an enormous impact on modem signal processing in general and carrier synchronization in particular. At that time, it was customary to send a pilot tone for carrier synchronization along with the data signal which consumed a significant amount of power. Costas was one of the earliest scientists to demonstrate that the carrier phase could be reliably recovered from the Rx signal without the need of a pilot tone. #communicationsystems #digitalsignalprocessing #wireless #digitalsystemdesign Since the publication of his paper, numerous quadrature carrier synchronization loop structures have been developed but their overall structure can easily be traced back to the original work by Costas. Take the SDR course with GNU Radio exercises to send and receive your own wireless signals (text and image) over the air without expensive SDR hardware through a speaker (Tx) and a microphone (Rx). https://wirelesspi.com/sdr-course/ Learn about wireless communications, DSP and SDRs from my book Wireless Communications from the Ground Up - An SDR Perspective through beautiful figures, simple Math and intuitive explanations. https://wirelesspi.com/book/ Learn about multiple antenna techniques (used in 5G and 6G systems) in 5G Physical Layer - An Easy Guide to Key Technologies through beautiful figures, simple Math and intuitive explanations. https://wirelesspi.com/5g-phy/