Title :
Performance evaluation for multi-user MIMO IEEE 802.11ac wireless LAN system
Author :
Nojima, Daisuke ; Lanante, Leonardo, Jr. ; Nagao, Yuhei ; Kurosaki, Masayuki ; Ochi, Hiroshi
Author_Institution :
Fac. of Comput. Sci. & Syst. Eng., Kyushu Inst. of Technol., Fukuoka, Japan
Abstract :
In this paper, we evaluate the performance of the next generation standard IEEE 802.11ac wireless local area network (WLAN) system. IEEE 802.11 for the first time will employ downlink multi-user multi-input multi-output (MU-MIMO) technology. Precoding techniques greatly influences the performance of MU-MIMO transmission. We measure these improvements when realistic channel conditions are applied. We compare the performance of channel inversion (CI) and block diagonalization (BD) precoding methods paired with various MIMO detection techniques. From the simulation results, we show the effectiveness of BD precoding compared to CI precoding.
Keywords :
MIMO communication; block codes; channel coding; next generation networks; performance evaluation; precoding; wireless LAN; BD precoding methods; CI precoding; MIMO detection techniques; MU-MIMO transmission; block diagonalization precoding methods; channel inversion precoding; downlink multiuser multiinput multioutput technology; multiuser MIMO IEEE 802.11ac wireless LAN system; next generation standard IEEE 802.11ac wireless local area network system; performance evaluation; preceding techniques; Modulation; Radio access networks; Transmitting antennas; Wireless communication; IEEE 802.11ac system; Linear precoding; MIMO detection; OFDM; multi-user MIMO;
Conference_Titel :
Advanced Communication Technology (ICACT), 2012 14th International Conference on
Conference_Location :
PyeongChang
Print_ISBN :
978-1-4673-0150-3
