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The faster decoding algorithm is still required in multiple-input multiple-output (MIMO) wireless communication technology. Lattice reduction (LR) technique can improve the performance of linear MIMO detection methods. LLL (Lenstra-Lenstra-Lovasz) algorithm is one of the LR techniques and it has being extensively used for better basis of channel matrix by removing noise. LR-aided detection algorithms...
As the large-scale multiple-input multiple-output (MIMO) systems have been advanced in wireless communication, the low complexity and high performance receiver technique have been required. Recently, lattice reduction technique have attracted attention in MIMO detection. Especially, lattice reduction aided linear detection like zero-forcing (ZF) can largely improve the performance with low complexity...
Sphere decoding (SD) algorithm, as one of the main vector detection mechanisms in digital communication systems, has been referred to have polynomial complexity over a wide range of signal-to-noise ratios (SNRs), rates, and numbers of antennas. The first part of this paper discusses the expected complexity of the SD algorithm over all input SNRs and numbers of antennas, and derives the upper bound...
This paper focuses on relay selection, subcarrier selection and power allocation (PA) in two-hop multi-relay networks in frequency-selective (FS) fading channel. The multiple relays adopt amplify-and-forward (AF) protocol and are subject to an aggregate power constraint. In order to maximize the instantaneous information rate of the system, both parallel mode (all the relays transmit signals simultaneously)...
To increase both the capacity and the processing speed for input-queued (IQ) switches, a fair scalable scheduling architecture (FSSA) has been proposed. By employing FSSA comprised of several chips of cascaded sub-scheduler, a large-scale high performance network scheduler can be realized without the capacity limitation of monolithic device. In this paper, we present an improved scheduling algorithm...
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