Title :
Inter-Carrier Interference Suppression in No-Guard-Interval Orthogonal Frequency-Division-Multiplexing System
Author :
Yan, Meng ; Tao, Zhenning ; Yan, Weizhen ; Li, Lei ; Hoshida, Takeshi ; Rasmussen, Jens C.
Author_Institution :
R&D Center, Fujitsu, Beijing, China
fDate :
4/1/2012 12:00:00 AM
Abstract :
The inter-carrier interference (ICI) in the no-guard-interval orthogonal frequency-division-multiplexing (NGI-OFDM) system causes severe performance degradation when 2-samples/symbol (Sa/sym) digital signal processing (DSP) is used at the receiver. To enable narrow bandwidth devices and low sampling rate DSP, a novel ICI suppression (ICIS) method is proposed and experimentally demonstrated in this letter. The proposed method improves the performance of the 4-Gbaud 25-carrier NGI-OFDM system by up to 4 dB, and 2-Sa/sym DSP with ICIS achieves comparable performance as the conventional 8-Sa/sym DSP without ICIS, with moderately increased complexity.
Keywords :
OFDM modulation; digital signal processing chips; intercarrier interference; interference suppression; radio receivers; NGI-OFDM system; digital signal processing; intercarrier interference suppression; low sampling rate; narrow bandwidth devices; no-guard-interval orthogonal frequency division multiplexing; radio receiver; Bandwidth; Digital signal processing; OFDM; Optical noise; Optical receivers; Signal to noise ratio; Coherent optical communication; inter-carrier interference (ICI); orthogonal frequency-division multiplexing (OFDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2183585
