Korea University of Technology and Education
School of Information Technology Engineering
Abstract Fixed-complexity sphere decoder (FSD), which consists of ordering stage and tree-search stage, achieves a quasiML performance while requiring a fixed computational effort independent of the noise power and channel conditioning.... more
Abstract In this paper, a multiple-input-multiple-output (MIMO) hybrid-automatic repeat request (HARQ) algorithm with antenna scheduling is proposed. It retransmits the packet using scheduled transmit antennas according to the state of... more
Abstract Multiple-input multiple-output (MIMO) techniques are the fundamental technology in several standardizations. For instance, MIMO spatial multiplexing (MIMO-SM) is used to increase the system capacity without requiring additional... more
Abstract: In this paper, we propose an adaptive coordinated Tx-Rx beamforming scheme for inter-user interference cancellation, when a base station (BS) communicates with multiple users that each has multiple receive antennas. The... more
Abstract The QR Decomposition (QRD) of communication channel matrices is a fundamental prerequisite to several detection schemes in Multiple-Input Multiple-Output (MIMO) communication systems. Herein, the main feature of the QRD is to... more
♦ Several users are assigned the same time and frequency resources♦ They are synchronized by the BS to send their data in the UL such that their signals combine at the BS's receive antenna signals combine at the BS s receive antenna♦ The... more
Abstract: Multiple antenna technologies have received high attention in the last few decades for their capabilities to improve the overall system performance. Multiple-input multiple-output systems include a variety of techniques capable... more
Abstract Multiple-input multiple-output (MIMO) technology applied with orthogonal frequency division multiplexing (OFDM) is considered as the ultimate solution to increase channel capacity without any additional spectral resources. At the... more
Abstract In this paper, a new scheme of downlink co-channel interference (CCI) cancellation in OFDM cellular networks is introduced for users at the cell-edge. Coordinated symbol transmission between base stations (BS) is operated where... more