Title :
Indoor optical wireless MIMO system with a non-imaging receiver
Author :
Haitao Mao ; Yanqing Guo ; Yongjin Wang ; Ziping Cao
Author_Institution :
Grunberg Res. Center, Nanjing Univ. of Posts & Telecommun., Nanjing, China
Abstract :
In this paper, an experimental demonstration of an indoor optical wireless multiple-input-multiple-output (MIMO) system with a non-imaging receiver is proposed. The system setup consists of a 2×2 array of white light-emitting diodes (LEDs) with spacing 15cm, and a 2×2 photo-detector array with spacing 10cm. A bit rate of 2 Mb/s/channel can be achieved in this system, with bit-error rate (BER) operation at different vertical height, separating transmitter and receiver. In order to detect the transmitted information, zero-forcing (ZF) detection and minimum-mean-square-error (MMSE) detection are utilized, analysed and compared. An overview of the design specification, optical design and experimental setup are reported in this paper, together with results and discussion of how the system might be improved.
Keywords :
MIMO communication; error statistics; indoor radio; least mean squares methods; light emitting diodes; optical receivers; photodetectors; radio receivers; BER; LED; MMSE detection; ZF detection; bit error rate; indoor optical wireless MIMO system; indoor optical wireless multiple input multiple output system; light emitting diode; minimum mean square error detection; nonimaging receiver; photodetector array; zero-forcing detection; Integrated optics; Light emitting diodes; MIMO; Optical receivers; Optical transmitters; Wireless communication; Multiple-input-multiple-output (MIMO) systems; minimum-mean-square-error (MMSE); visible light communications; wireless communications; zero-forcing (ZF);
Conference_Titel :
Optical Communications and Networks (ICOCN), 2015 14th International Conference on
Conference_Location :
Nanjing
DOI :
10.1109/ICOCN.2015.7203686
