| Authors |
H. Okada, K. Masuda, T. Yamazato, M. Katayama |
| Title |
Successive Interference Cancellation for Hierarchical Parallel Optical Wireless Communication Systems |
| Authority |
Asia-Pacific Conference on Communications (APCC), pp.788-792 |
| Summary |
A parallel optical
wireless communication system using two-dimensional LED array (2D LED
array) and two-dimensional image sensor (2D image sensor) was proposed
for the visible light communication systems. In this system, each LED
of the 2D LED array is individually modulated, and the 2D image sensor
recognizes each LED modulated data. However, the received data
pattern will be degraded due to reduction of pixel size and/or
defocussing of the LED data pattern. This phenomenon corresponds to the
degradation of high spatial frequency components of the received data
pattern. To overcome, we employ a
hierarchical transmission scheme at a transmitter and a successive
interference cancellation at a receiver.
By allocating high priority data to low frequency components
and low priority data to high frequency components,
the reception of high priority data can be guaranteed.
We also attempt to apply interference cancellation to overcome the
degradation of high spatial frequency components of the received data
pattern. By evaluating the bit error rate, we clarify the effect of the
proposed system. |
| 年月 |
2005年10月 |
| DOI/Handle |
|
| 開催場所 |
Perth, Australia |
| 研究テーマ |
|
| 言語 |
英語 |
| 原稿/プレゼン資料 |
 /  (ローカル限定) |
