EDN

An overview of the LTE physical layer–Part II

To allow for coherent demodulation at the user equipment, reference symbols (or pilot symbols) are inserted in the OFDM time-frequency grid to allow for channel estimation. Downlink reference symbols ...
EDN

An overview of the LTE physical layer–Part I

The design of the LTE physical layer (PHY) is heavily influenced by requirements for high peak transmission rate (100 Mbps DL/50 Mbps UL), spectral efficiency, and multiple channel bandwidths (1.25-20 ...