Abstract
We present a radio-frequency (RF) and bit-rate scalable technique for multigigabit wireless signal generation based on all-optical orthogonal frequency-division multiplexing (OFDM) and photonic up-conversion. Coherent detection supported by digital signal processing is used for signal demodulation and data recovery. In order to demonstrate the RF frequency scalability and bit-rate transparency, the system is tested at 60 GHz and in the 75- to 110-GHz band at the baud rates of 5 and 10 Gbaud. In terms of the bit rate, the proposed system is experimentally tested up to 40 Gb/s for wireless signal generation and demodulation. The wireless transmission is not considered in this letter. Additionally, a novel digital carrier phase/frequency recovery structure is employed to enable robust phase and frequency tracking between the beating lasers.
| Original language | English |
|---|---|
| Journal | IEEE Photonics Technology Letters |
| Volume | 23 |
| Issue number | 12 |
| Pages (from-to) | 810-812 |
| ISSN | 1041-1135 |
| DOIs | |
| Publication status | Published - 2011 |
Keywords
- Modulation
- Coherent communication
- Microwave photonics
- Digital receivers
- Digital signal processing
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