Combining transmitter beamforming and space-time block codes in slow rayleigh flat fading channels.
Date of Issue2006
School of Electrical and Electronic Engineering
In this thesis, wc consider the design of two types of closed-loop combined systems of beamforming and space-time block codes (STBC) taking the degree of the feedback channel state information (CSI) at the transmitter into account. The first type is the combined system of beamforming and predetermined Alamouti's STBC, where only the beamforming matrix is the free parameter that can be adjusted according to the feedback. Different from the existing combined system of beamforming and orthogonal STBC (OSTBC) where different OSTBC is used for different number of transmitting antennas, our combined system uses fixed Alamouti's STBC regardless of the number of the transmitting antennas. Thus, the application of Alamouti's STBC for two transmitting antennas is extended to more than two by using the beamforming technique.
DRNTU::Engineering::Electrical and electronic engineering