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Analysis of Timing and Frequency Offsets on OFDM Systems for Fractional Sampling Rate
- Authors
- Lim, Byungju; Ko, Young-Chai
- Issue Date
- 10월-2017
- Publisher
- IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
- Keywords
- synchronization; timing offset; frequency offset; OFDM systems; fractional sampling
- Citation
- IEICE TRANSACTIONS ON COMMUNICATIONS, v.E100B, no.10, pp.1946 - 1951
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEICE TRANSACTIONS ON COMMUNICATIONS
- Volume
- E100B
- Number
- 10
- Start Page
- 1946
- End Page
- 1951
- ISSN
- 0916-8516
- Abstract
- Timing and frequency off sets are caused by imperfect synchronization at the receiver. These errors degrade the performance of OFDM systems by introducing inter-carrier-interference (ICI) and intersymbol-interference (ISI). In this paper, we derive signal-to-interference ratio (SIR) analytically with timing and frequency off sets for the case that the sampling rate of analog-to-digital converter (ADC) in OFDM receiver is an integer fraction of the signal bandwidth. We find the exact form of interference power as a function of the fractional sampling rate. Our derived analysis is confirmed by simulations and can be applied to see the exact performance of OFDM systems with fractional sampling rate.
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