Open Access

On the Capacity of Certain Space-Time Coding Schemes

EURASIP Journal on Advances in Signal Processing20022002:292150

https://doi.org/10.1155/S1110865702000811

Received: 30 May 2001

Published: 30 May 2002

Abstract

We take a capacity view of a number of different space-time coding (STC) schemes. While the Shannon capacity of multiple-input multiple-output (MIMO) channels has been known for a number of years now, the attainment of these capacities remains a challenging issue in many cases. The introduction of space-time coding schemes in the last 2–3 years has, however, begun paving the way towards the attainment of the promised capacities. In this work we attempt to describe what are the attainable information rates of certain STC schemes, by quantifying their inherent capacity penalties. The obtained results, which are validated for a number of typical cases, cast some interesting light on the merits and tradeoffs of different techniques. Further, they point to future work needed in bridging the gap between the theoretically expected capacities and the performance of practical systems.

Keywords

MIMO systemsspace-time codingBell labs Layered Space Time (BLAST)space-time spreading (STS)channel capacityspace-time processing (STP)transmit diversity

Authors’ Affiliations

(1)
Global Wireless Systems Research Department, Bell Laboratories, Lucent Technologies
(2)
Wireless Communications Research Department, Bell Laboratories, Lucent Technologies

Copyright

© Papadias and Foschini 2002