Title :
Adaptive CSI feedback scheme to maximize the throughput in IEEE 802.11ac system
Author :
Hyunsub Kim ; Yongmin Jung ; Jangyong Park ; Jaeseok Kim
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
In this letter, we propose a low-complexity adaptive channel state information (CSI) feedback scheme to maximize the throughput in IEEE 802.11ac systems. We analyze the two factors - the interference and the feedback overhead -and develop a method to attain an optimal CSI feedback quantization level with minimal additional complexity. Our numerical results and complexity comparisons verify the efficiency of the proposed scheme in terms of throughput and complexity.
Keywords :
MIMO systems; communication complexity; feedback; quantisation (signal); radiofrequency interference; telecommunication standards; wireless LAN; IEEE 802.11ac system; adaptive channel state information feedback scheme; communication complexity; feedback overhead; network throughput; optimal CSI feedback quantization level; radiofrequency interference; Adaptive systems; Complexity theory; Decoding; Interference; MIMO; Receiving antennas; Throughput; CSI feedback; DL MU-MIMO system; IEEE 802.11ac system; interference;
Conference_Titel :
Consumer Electronics (ISCE 2014), The 18th IEEE International Symposium on
Conference_Location :
JeJu Island
DOI :
10.1109/ISCE.2014.6884319
