Hybrid OFDM based LED positioning method and system

Hybrid OFDM based LED positioning method and system

The invention discloses a hybrid OFDM based LED positioning method and system. The method and system combine an LED positioning algorithm of hybrid OFDM, use ACO-OFDM to modulate odd carriers, use PAM-DMT to modulate the imaginary part of even carriers, and use RSS to determine a coordinate of a rec...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WANG JIN, ZENG FUJIANG, LI HAOXU, ZHANG XIAOFENG
Format: Patent
Sprache:chi ; eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
WIRELESS COMMUNICATIONS NETWORKS
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Beschreibung
Zusammenfassung:The invention discloses a hybrid OFDM based LED positioning method and system. The method and system combine an LED positioning algorithm of hybrid OFDM, use ACO-OFDM to modulate odd carriers, use PAM-DMT to modulate the imaginary part of even carriers, and use RSS to determine a coordinate of a receiver. According to the hybrid OFDM based LED positioning method and system disclosed by the invention, the positioning accuracy under the influence of multi-path interference can be improved, and meanwhile, the transmission rate and spectrum utilization can be improved. 本发明公开了种基于混合OFDM的LED定位方法与系统，该方法与系统结合混合OFDM的LED定位算法，利用ACO-OFDM调制奇载波，PAM-DMT调制偶载波的虚部，并使用RSS确定接收机的坐标。本发明的基于混合OFDM的LED定位方法与系统，提高了在多径干扰影响下的定位精度，同时提高传输速率及频谱利用率。