Abstract
Timing and frequency offsets 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 offsets 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.
| Original language | English |
|---|---|
| Pages (from-to) | 1946-1951 |
| Number of pages | 6 |
| Journal | IEICE Transactions on Communications |
| Volume | E100B |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2017 Oct |
Bibliographical note
Funding Information:This work was supported by Institute for Information & communications Technology Promotion (IITP) grant funded by the Korea government (MSIT) (2015-0-00300, Multiple Access Technique with Ultra-Low Latency and High Efficiency for Tactile Internet Services in IoT Environments).
Publisher Copyright:
© 2017 The Institute of Electronics, Information and Communication Engineers.
Keywords
- Fractional sampling
- Frequency offset
- OFDM systems
- Synchronization
- Timing offset
ASJC Scopus subject areas
- Software
- Computer Networks and Communications
- Electrical and Electronic Engineering
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