Abstract

The challenges and issues related to the application in IEEE 802.11ac systems of lattice reduction (LR) techniques for the implementation of successive interference cancellation (SIC) receivers in single-user (SU) and multi-user (MU) orthogonal frequency division multiplexing (OFDM) multiple input multiple output (MIMO) transceivers are investigated in this paper. The shown simulation results, validated using first-order techniques, assume realistic operational conditions faced in IEEE 802.11ac wireless local area networks (WLANs), such as, temporal auto-correlation synchronization algorithm, least square (LS) MIMO channel estimation scheme, spatial-correlated and frequency selective Task Group ac (TGac) channel models. The implementation of LR Minimum Mean Squared Error (MMSE) SIC (LR MMSE-SIC) MIMO detectors with hard-decision Viterbi decoding allows dramatic power gains in relation to LR MMSE MIMO detectors in the SU scenario when the maximum number of spatial streams (SS) in 802.11ac systems is assumed. However, no noticeable power gain occurs when the operation of 802.11ac WLANs in MU environments is taken into account.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.