Indoor Infrared Optical Wireless Communications by Wang Ke;

Author:Wang, Ke;
Language: eng
Format: epub
Publisher: Taylor & Francis Group
Published: 2020-05-15T00:00:00+00:00

FIGURE 4.13

Constellations of the 4-QAM and 16-QAM symbols. (a) Strategy 1 (i.e. ) and (b) strategy 2 (i.e. ).

FIGURE 4.14

The TSC BER performance with adaptive loading function: user-1 (4-QAM), user-2 (16-QAM), user-3 (4-QAM), user-4 (16-QAM), user-5 (16-QAM).

From the analysis and demonstration above, it can be seen that the adaptive loading-based TSC scheme can use the signal power more efficiently, to achieve higher system throughput when providing multi-user access in indoor OWC systems. The principle discussed above can be applied to more users using more versatile modulation formats.

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