On the Optimality and Performance of Transmit and Receive Space Diversity in MIMO Channels.
IEE Technical Seminar on MIMO systems: From Concept to Implementation
London, UK, December 12, 2001. © 2001 IEE
- The issue of channel state information at the transmitter is
investigated using MIMO channel measurements and by deriving
expressions for ergodic and outage capacity in a Rayleigh fading
channel. Expressions for bit error rates in Rayleigh fading
channels are also presented for orthogonal space time block codes
and for beamforming where the bit error rates in the beamforming
case follow from the distribution of the largest eigenvalue to
Wishart matrices. We demonstrate by measurements that Rayleigh
fading is a valid assumption in non line of sight channels,
although a Nakagami-$m$ distribution showed to be a more
appropriate distribution model in both line of sight and NLOS
environments. It was also demonstrated that channel state
information at the transmitter is less useful in high-SNR
scenarios but is more useful in line of sight channels compared to
non line of sight environments.
Personal use of this material is permitted.
However, permission to reprint/republish this material for
advertising or promotional purposes or for creating new
collective works for resale or redistribution to servers or lists,
or to reuse any copyrighted component of this work in other works
must be obtained from the IEE.