Analysis of ICI Cancellation Scheme in OFDM Systems With Phase Noise

2004 ◽  
Vol 50 (2) ◽  
pp. 97-106 ◽  
Author(s):  
Z. Jianhua ◽  
H. Rohling ◽  
Z. Ping
Keyword(s):  
Phase Noise ◽  
Ofdm Systems ◽  
Ici Cancellation

Channel Estimation and Symbol Detection with ICI Cancellation Based on Superimposed Training for OFDM Systems

2012 ◽  
Vol E95.B (9) ◽  
pp. 2926-2930
Author(s):  
Qinjuan ZHANG ◽  
Muqing WU ◽  
Qilin GUO ◽  
Rui ZHANG ◽  
Chao Yi ZHANG
Keyword(s):  
Channel Estimation ◽  
Ofdm Systems ◽  
Superimposed Training ◽  
Symbol Detection ◽  
Ici Cancellation

Phase Noise Estimation and Mitigation for Cognitive OFDM Systems

2012 ◽  
pp. 739-745
Author(s):  
Yuan Jing ◽  
Haoyu Li ◽  
Xiaofeng Yang ◽  
Li Ma ◽  
Ji Ma ◽  
...  
Keyword(s):  
Phase Noise ◽  
Noise Estimation ◽  
Ofdm Systems

scholarly journals Performance Enhancement of Coherent Optical OFDM System Using LMS Algorithm

2020 ◽  
Vol 1 ◽  
pp. 1-5
Author(s):  
Manisha Bharti
Keyword(s):  
Phase Noise ◽  
Bit Error Rate ◽  
Error Rate ◽  
Orthogonal Frequency Division Multiplexing ◽  
Performance Enhancement ◽  
Lms Algorithm ◽  
Frame Structure ◽  
Least Mean Square ◽  
Ofdm Systems ◽  
Ofdm System

Instability of the local oscillator causes phase noise – a phenomenon that is a disadvantage and is considered to be a major obstacle in the functioning of coherent optical orthogonal frequency division multiplexing (CO-OFDM) systems. An attempt has been made in this paper to reduce the effects of common phase errors generated by phase noise. In this paper, a least mean square (LMS) based algorithm is proposed for estimation of phase noise. Using this proposed algorithm, the major problem of phase ambiguity caused by cycle slip is avoided and the bit error rate is greatly improved. Further, there is no requirement for modifying the frame structure of OFDM using this algorithm. A CO-OFDM system with the 8-PSK technique is used to implement the algorithm concerned. Furthermore, the algorithm, using the 8-PSK modulation technique, is analyzed and compared with the existing QPSK technique and with other algorithms. The investigations reveal that 8-PSK outperforms existing LMS algorithms using other techniques and significantly reduces the bit error rate.

Sign in / Sign up

Export Citation Format

Share Document