TY - JOUR
T1 - Experimental investigation of modulation method for visible-light communications
AU - Sugiyama, Hidemitsu
AU - Haruyama, Shinichiro
AU - Nakagawa, Masao
PY - 2006/12
Y1 - 2006/12
N2 - We have developed a new modulation method - inverted pulse position modulation (I-PPM) and subcarrier inverted pulse position modulation (SC-I-PPM) - that provides superior LED brightness for visible-light communications. In addition, the new modulation method SC-I-PPM is not affected by background light. In this paper, we investigated several modulation methods in details and set up a standard with which to evaluate the performance of modulation methods. Several modulation methods are subjected to experiments to clarify their performance. Experiments show that subcarrier modulation suppresses the influence of background light and that our new modulation best maintains LED brightest.
AB - We have developed a new modulation method - inverted pulse position modulation (I-PPM) and subcarrier inverted pulse position modulation (SC-I-PPM) - that provides superior LED brightness for visible-light communications. In addition, the new modulation method SC-I-PPM is not affected by background light. In this paper, we investigated several modulation methods in details and set up a standard with which to evaluate the performance of modulation methods. Several modulation methods are subjected to experiments to clarify their performance. Experiments show that subcarrier modulation suppresses the influence of background light and that our new modulation best maintains LED brightest.
KW - LED
KW - Modulation
KW - Optical wireless communication
KW - PPM
KW - Visible-light communication
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U2 - 10.1093/ietcom/e89-b.12.3393
DO - 10.1093/ietcom/e89-b.12.3393
M3 - Article
AN - SCOPUS:33845565698
SN - 0916-8516
VL - E89-B
SP - 3393
EP - 3400
JO - IEICE Transactions on Communications
JF - IEICE Transactions on Communications
IS - 12
ER -