A Low-Power Adaptive MIMO Detector for MIMO-OFDM WLAN Systems
A MIMO-OFDM receiver requests high-speed MIMO detection to separate spatially multiplexed signals on real-time processing, which causes large power dissipation due to its high throughput performance. We present an adaptive MIMO detector which adaptively changes the computational speed of MIMO detection by estimating Doppler shifts correlated with fading channel variations. The adaptive detector uses a DVFS technique which dynamically changes a clock frequency and a supply voltage according to the selected computational speed. This work discusses an 8x8 MIMO detector assuming single-user MIMO usage in IEEE802.11ac wireless LAN systems. The conventional and the proposed MIMO detectors have been evaluated in power dissipation.
Shingo Yoshizawa Nozomi Miyazaki Daisuke Nakagawa Yoshikazu Miyanaga
Graduate School of Information Science and Technology, Hokkaido University Kita 14 Nishi 9 Kita-ku, Graduate School of Information Science and Technology, Hokkaido UniversityKita 14 Nishi 9 Kita-ku, S
国际会议
2011亚太信号与信息处理协会年度峰会(APSIPAASC 2011)
西安
英文
1-5
2011-10-18（万方平台首次上网日期，不代表论文的发表时间）