V-BLAST is a technique that uses multiple antennas at the transmitter and receiver to increase data rates over wireless channels. It stands for Vertical Bell Laboratories Layered Space Time. V-BLAST is a simplified version of D-BLAST that reduces computational complexity by transmitting each data stream through a single antenna (horizontally layered). At the receiver, signals are detected by first nulling out interference from other streams through linear weighting, then detecting and canceling streams starting from the highest SNR stream. V-BLAST is used in wireless communication standards like 802.11n, 4G, LTE, and WiMAX to implement MIMO technology.