Abstract
Diffused infrared transmission is one of the preferred techniques used in indoor wireless communications. Tolerance to shadowing and a lack of alignment requirements are among the many advantages offered by this technique. However, it has its disadvantages, namely high pathloss and multipath dispersion. The limitation imposed by eye-safety requirements restricts the transmitted power. Therefore, efficient use of transmitted optical power is the key for practical broadband infrared systems. In this paper, we report on using a holographic diffuser for shaping of infrared radiation pattern in an indoor infrared transmission system. The reported measurements show that the path loss of a non-directed optical link can be reduced by employing a properly designed holographic diffuser. The results also show another advantage of using the proposed holographic diffuser which is the added tolerance (robustness) of the transmission to shadowing.
| Original language | English (US) |
|---|---|
| Pages | 1608-1612 |
| Number of pages | 5 |
| State | Published - Dec 1 1996 |
| Event | Proceedings of the 1996 IEEE Communications Theory Mini-Conference. Part 4 (of 4) - London, UK Duration: Nov 18 1996 → Nov 22 1996 |
Other
| Other | Proceedings of the 1996 IEEE Communications Theory Mini-Conference. Part 4 (of 4) |
|---|---|
| City | London, UK |
| Period | 11/18/96 → 11/22/96 |
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
- Global and Planetary Change