Exploiting high rate differential algebraic space‐time block code in downlink multiuser MIMO systems

Multiuser Space-Time Block Coded MIMO System with Downlink Precoding

Space-time block codes (STBC) are powerful techniques to achieve full spatial diversity in Rayleigh fading channels with low decoding complexity. When channel state information is available to the transmitter, space-time block codes can be improved through the use of a transmit precoder chosen based in part on the current channel state. In this paper, we investigate the downlink transmission of...

The cardinal role of Scheduling in Downlink Multiuser MIMO Systems

Network model and Objectives. Distributed resource allocation in multicell networks. Network capacity scaling laws for large number of users. Performance evaluation. NK user 1 user k user K N1 Nk base station (M antennas) K users (user k has Nk antennas) BS or AP equipped with M transmit antennas, and K active terminals. Each user k has N k antennas. Active users: set of users simultaneously do...

Approximation of Multiuser Rates in MIMO OFDM Downlink Systems

We propose a new limited feedback scheme for the downlink of multiuser MIMO OFDM systems based on fixed linear beamforming, i.e. the linear beamforming vectors are chosen from a fixed transmit codebook. The proposed feedback method allows the base station to uniformly approximate all multiuser rates for any selection of users and any combination of beamforming vectors defined by the transmit co...

Throughput Maximization in Linear Multiuser MIMO-OFDM Downlink Systems

An efficient user scheduling scheme for downlink Multiuser MIMO-OFDM systems with Block Diagonalization

The combination of multiuser multiple-input multiple-output (MU-MIMO) technology with orthogonal frequency division multiplexing (OFDM) is an attractive solution for next generation of wireless local area networks (WLANs), currently standardized within IEEE 802.11ac, and the fourth-generation (4G) mobile cellular wireless systems to achieve a very high system throughput while satisfying quality...