Title :
High Bit Rate Pulse Position Modulation Signal Generation Based on Rare-Earth-Doped Crystals
Author :
Xiurong Ma ; Song Wang ; Shuanggen Zhang ; Shiyu Zhang ; Yuqing Liang
Author_Institution :
Dept. of Comput. & Commun. Eng., Tianjin Univ. of Technol., Tianjin, China
Abstract :
A novel approach for generating a high bit rate m-ary pulse position modulation (PPM) signal is proposed. This approach is implemented by using two temporally overlapping linear frequency chirps (TOLFC) and multiple probe pulses interact with rare-Earth-doped crystal (REIC). By simply adjusting the start frequency of the probe pulse, the time interval of compressed pulse in the PPM signal was controlled. The relationship between the time interval of compressed pulse and the start frequency shift of probe pulse is theoretically analyzed and verified by simulation. In the last part, a simulation is performed, which shows a 4-PPM signal at a bit rate of 10 Gbit/s by using the aforementioned method.
Keywords :
pulse position modulation; rare earth metals; signal processing; PPM signal; TOLFC; bit rate 10 Gbit/s; bit rate m-ary pulse position modulation; high bit rate pulse position modulation signal generation; probe pulse; rare-Earth-doped crystal; rare-earth-doped crystals; two temporally overlapping linear frequency chirps; Bandwidth; Bit rate; Chirp modulation; Gratings; Modulation; Rare earth metals; Time-frequency analysis; Pulse position modulation signal; compressed pulse; pulse interval; pulse position modulation signal; rare-Earth-doped crystal; rare-earth-doped crystal;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2014.2366139
