Mariko Nakaso

Multi-channel wireless LAN distributed antenna system based on radio-over-fiber techniques

We introduce the multi-channel WLAN system based on RoF techniques that realize efficient and flexible network operations. Single-channel optical transmission characteristics of an IEEE802.11a or 11b signal are clarified, and multi-channel transmission performances are discussed.

Transmission performance of multichannel wireless LAN system based on radio-over-fiber techniques

We clarify the transmission performance of our proposed multichannel wireless local area network (WLAN) system based on radio-over-fiber techniques. We developed a practical and effective method for the analysis of multichannel performances from the measurement of single-channel performances by incorporating the spectral distribution of a modulation signal into a calculation of the composite triple beats. Furthermore, using our developed method, we can clarify the maximum capacity of the multichannel WLAN system and its system parameters with a focus on the performance of the orthogonal frequency division multiplexing with 64-quadrature amplitude modulation channel. For example, the cell diameter for realizing the bidirectional transmission of seven-channel WLAN signals becomes 10 m.

Multiband wireless LAN distributed antenna system using radio-over-fiber

In this paper, we propose a novel radio-over-fiber multiband wireless LAN distributed antenna system and also describe a noise canceling technique applied to counteract the problem of received RF signal degradation caused by the noise generated by the O/E in a remote antenna unit.

Effects of interference on multi-channel wireless LAN distributed antenna system based on radio-over-fiber techniques

The effects of several kinds of interference on multi-channel wireless LAN optical transmission systems are appreciated. It is shown that amplitude distributions of these interferences have large impact on the PER and EVM characteristics.