Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/46866
Title: Experimental characterization of a direct-sequence spread-spectrum optical wireless system based on pulse-conformation techniques for in-house communications
Authors: Rabadán, José A. 
Bacallado, Miguel A.
Delgado, Francisco
Pérez, Santiago T.
Pérez-Jiménez, Rafael 
Keywords: Spread spectrum communication
Optical pulses
Interference
Infrared spectra
Optical propagation, et al
Issue Date: 2004
Publisher: 0098-3063
Journal: IEEE Transactions on Consumer Electronics 
Abstract: In this paper, the design and experimental testing of a direct-sequence spread spectrum (DSSS) system for wireless infrared LAN is presented. This method improves the wireless IR communications performances against multipath propagation and narrowband interference. We have implemented a IR-DSSS prototype with 100 MHz code frequency and 6 Mbps bit rate. We have also studied the effects of both Gaussian and sinusoidal signal conformation over wireless optical DSSS systems. These results show that these techniques reduce the adjacent-channel interference without loss of process gain or substantial reductions of BER vs. S/N performances. We also present some results about a simplified synchronization structure to be used on reduced-cost domestic equipment. These systems are suitable for different applications at low and medium rates, especially for in-house.
URI: http://hdl.handle.net/10553/46866
ISSN: 0098-3063
DOI: 10.1109/TCE.2004.1309412
Source: IEEE Transactions on Consumer Electronics[ISSN 0098-3063],v. 50, p. 484-490
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