In this paper we address the issue of optimizing the performance of data-link and transport protocols running on a system including multiple transmit and receive antennas with a V-BLAST architecture. More specifically, we explore the possibility of adaptively selecting the antenna transmit powers in order to maximize the number of data packets successfully delivered through the system. This is a novel approach with respect to the recent literature which is generally focused on channel capacity optimization. We show that the use of this power adaptation technique, when a TCP protocol is running over the link, leads to significant throughput improvements especially at small signal-to-noise ratios.
On the use of per-antenna rate and power adaptation in V-BLAST systems for protocol performance improvement
MILANI, Alessio;TRALLI, Velio;ZORZI, Michele
2002
Abstract
In this paper we address the issue of optimizing the performance of data-link and transport protocols running on a system including multiple transmit and receive antennas with a V-BLAST architecture. More specifically, we explore the possibility of adaptively selecting the antenna transmit powers in order to maximize the number of data packets successfully delivered through the system. This is a novel approach with respect to the recent literature which is generally focused on channel capacity optimization. We show that the use of this power adaptation technique, when a TCP protocol is running over the link, leads to significant throughput improvements especially at small signal-to-noise ratios.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
