Performance of Packetized Layered Space-Time Detection Over Wireless Links

ALOHA systems are some of the most attractive options for wireless applications which include packet transmission. However, despite their exibility and simplicity, they present a very low channel throughput. The objective of this paper is to analyze the performance of Slotted ALOHA based vertical layered space-time, known as V-BLAST, systems over wireless links. The multiple transmit antennas in VBLAST are treated as individual mobile station transmitters, while the base station consists of multiple receive antennas. The V-BLAST algorithm is then invoked to jointly detect the signals from all users at the same time. To demonstrate the potential of the proposed multiple-input multiple-output (MIMO) system, we rst consider the performance of V-BLAST in a circuit-switched at fading environment for a variety of system parameters. Then, the throughput and delay performance are analyzed under di erent packetized tra cs.