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In-band OSNR measurement for CO-OFDM systems using high-resolution spectral analysis is experimentally demonstrated. It is shown that signal and noise levels can be monitored by direct optical spectrum analysis, avoiding the need for data demodulation.
In this Paper, we experimentally demonstrate highly flexible and intelligent interdomain coordinated actions based on adaptive software-defined networking (SDN) orchestration. An advanced multidomain multitechnology testbed is implemented, which consists of a 400-Gb/s variable capacity optical packet switching domain and a Tb/s-class flexi-grid wavelength division multiplexed optical circuit switching...
Cognitive SDN orchestration over 400-Gbps OPS and Tbps-class Flexi-WDM networks is demonstrated, where the SDN-controllable OFDM transponders and the extended transport API enable the congestion-aware provisioning of end-to-end real-time services.
Spatial multiplexing gain degradation due to millimeter-order antenna misalignments in W-band MIMO-RoF systems is investigated in 40-Gbps-class 2 × 2 MIMO-OFDM RoF transmissions. The advantage of space-time block coding there is also demonstrated.
A novel fixed-length elastic-capacity optical OFDM payload packet which can significantly ease the buffer scheduling is proposed. 1 × 2 switching and fiber delay line buffering of 19-30Gbps coherent OFDM payload packets is experimentally demonstrated.
We present a novel bandwidth-elastic and power-efficient coherent NG-PON based on coherent interleaved frequency division multiple access (IFDMA) and experimentally demonstrate the 2xONUs uplink transmission, exhibiting capabilities of the elastic bandwidth provisioning and CFO compensation.
This paper presents the effectiveness of high order phase noise compensation by off-line experiment which shows the scheme can reduce the pilot tone density to 25% or improve the EVM by 0.25dB for 16QAM OFDM.
This paper presents the first published single-chip RF tuner / OFDM demodulator for a mobile digital TV application (1-segment broadcasting). To improve the minimum sensitivity, spurious signal suppression techniques are proposed. The single-chip RF tuner / OFDM demodulator using the proposed spurious signal suppression techniques is fabricated using 90 nm CMOS technology and total die size is 3.26...
One limiting issue in implementing high-speed wireless systems is the impairment associated with analog processing due to component imperfections. In uplink transmission of multiuser systems, a major source of such impairment is IQ imbalance (IQI) introduced at multiple transmitters. In this paper, we analyze the effect of the transmitter (Tx) IQI on OFDMA receiver. To cope with the inter-user interference...
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