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Spectrally efficient direct-detected OFDM transmission employing an iterative estimation and cancellation technique.
By employing the iterative estimation and cancellation technique for the signal-signal beat interference at the receiver, the approach alleviates the need of the frequency gap, which is typically reserved for isolating the SSBI, and saves half the electrical bandwidth, thus being very spectrally efficient. Expand
Theoretical and Experimental Investigations of Direct-Detected RF-Tone-Assisted Optical OFDM Systems
In this paper, we propose and experimentally demonstrate a radio frequency (RF)-tone-assisted optical orthogonal frequency-division multiplexing (OFDM) transmission. By inserting an RF tone at theExpand
Optical signal-to-noise ratio monitoring of an 80 Gbits/s polarization-multiplexed return-to-zero differential phase-shift keying channel.
An optical signal-to-noise ratio monitoring technique for an 80 Gbits/s polarization-multiplexed return- to-zero differential phase-shift keying channel utilizing a narrowband optical filter and a low-speed detector is proposed and experimentally demonstrated. Expand
Experimental Demonstration of an Interference-Avoidance-Based Protocol for O-CDMA Networks
This work demonstrates the transmission scheduling algorithm in an O-CDMA network to avoid congestion collapse and shows that transmission scheduling increases the performance of the system by orders of magnitude. Expand
Experimental demonstration of all-optical "missing chip detection" to alleviate near-far effect in O-CDMA systems
We demonstrate a novel receiver design for O-CDMA systems based on all-optical missing-chip detection. Penalty due to near-far effect is reduced by >8 dB compared to the conventional receiver and theExpand
Experimental demonstration of multicarrier-CDMA for passive optical networks
Optical multicarrier-CDMA is experimentally demonstrated for the first time with a total bit rate of 15-Gb/s with almost no penalty after 70-Km transmission. Expand
Experimental Demonstration of a Coherently Modulated and Directly Detected Optical OFDM System Using an RF-Tone Insertion
We experimentally demonstrate an RF-tone assisted OFDM transmission. Our system has a 5-dB better sensitivity compared to the conventional baseband SSB-OFDM and exhibits a negligible penallyExpand
Experimental Demonstration of 340 km SSMF Transmission Using a Virtual Single Sideband OFDM Signal that Employs Carrier Suppressed and Iterative Detection Techniques
We propose and demonstrate a virtual SSB-OFDM with direct detection that uses half the electrical bandwidth by employing an RF tone at the edge of the signal. We transmit 10 Gbps data with a 4-QAMExpand
Tunable optical wavelength conversion of OFDM signal using a periodically-poled lithium niobate waveguide.
Tunable optical wavelength conversion of a 10-Gb/s radio frequency (RF)-tone assisted orthogonal-frequency-division-multiplexing (OFDM) signal with approximately-5 dB efficiency over approximately 30 nm bandwidth using a periodically-poled lithium-niobate (PPLN) waveguide is experimentally demonstrated. Expand
Advanced Techniques to Increase the Number of Users and Bit Rate in OCDMA Networks
This paper reviews OCDMA systems and their limitations, as well as various experimental techniques to increase the number of users and/or bit rate in a system or a network, and investigates two techniques to overcome them: interference avoidance and missing chip detection. Expand