ULA – RAYmaps

May 30, 2022December 9, 20245G, Antennas

Fundamentals of Direction of Arrival Estimation

Direction of Arrival (DOA) estimation is a fundamental problem in communications and signal processing with application in cellular communications, radar, sonar etc. It has become increasingly important in recent times as 5G communications uses DOA to spatially separate the users resulting in higher capacity and throughput. Direction of Arrival estimation can be thought of as the converse of beamforming.

December 26, 2018June 4, 20225G, Fundamentals

Multicarrier Beamforming at mmWave

Discussion of Multicarrier Beamforming particularly in the context of Massive MIMO and Millimeterwave

January 21, 2018June 26, 2022Antennas, Fundamentals

Fundamentals of a Uniform Linear Array (ULA)

A Uniform Linear Array (ULA) is a collection of sensor elements equally spaced along a straight line. The most common type of sensor is a dipole antenna that can transmit and receive Electromagnetic Waves over the air. Other types of sensors include acoustic sensors that may be used in air or under water. The requirements of a ULA are different for different applications but the most common requirement is to improve the Signal to Noise Ratio (SNR) and to improve its response (Gain) in a particular direction.