Abstract
We discuss an improved detection scheme for differential phase shift keying (DPSK) and differential quadrature phase shift keying (DQPSK), based on multi-symbol phase estimation (MSPE) through electrical signal processing. Using a recursive electrical signal processing algorithm, close to homodyne performance is obtained without a local oscillator at the receiver. In the presence of only Gaussian noise the proposed scheme yields a O.SdB and 1.8dB sensitivity improvement over self-homodyne detection, for DPSK and DQPSK respectively. lt furthermore improves robustness against impairments due to the influence of a finite laser linewidth and nonlinear phase noise.
| Original language | English |
|---|---|
| Title of host publication | proc. IEE Seminar on Optical Fibre Communication and Electronic Signal Processing, London, December 2005 |
| Place of Publication | London, UK |
| Publisher | Institute of Electrical Engineers |
| Pages | 12/1-12/7 |
| Publication status | Published - 2005 |
| Event | conference; IEE Seminar on Optical Fibre Communication and Electronic Signal Processing, London, December 2005; 2005-12-15; 2005-12-15 - Duration: 15 Dec 2005 → 15 Dec 2005 |
Conference
| Conference | conference; IEE Seminar on Optical Fibre Communication and Electronic Signal Processing, London, December 2005; 2005-12-15; 2005-12-15 |
|---|---|
| Period | 15/12/05 → 15/12/05 |
| Other | IEE Seminar on Optical Fibre Communication and Electronic Signal Processing, London, December 2005 |