Abstract
In this paper, we analyze the impacts of timing offset (TO), carrier frequency offset (CFO), and phase noise in orthogonal frequency division multiplexing (OFDM) and generalized frequency division multiplexing (GFDM) waveforms. As TO can be classified into four cases depending on the direction of offset, we provide the analysis of signal-to-interference ratio (SIR) for each of the cases when phase noise and synchronization errors of the desired user occur in frequency selective channel. We also propose the receiver filter for GFDM systems that is optimized to maximize SIR with CFO in additive white Gaussian noise channel. Simulation results show that GFDM is more sensitive to CFO than OFDM. We also confirm that GFDM systems using proposed receiver filter are robust against CFO compared with conventional systems.
Original language | English |
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Article number | 8014504 |
Pages (from-to) | 6979-6990 |
Number of pages | 12 |
Journal | IEEE Transactions on Wireless Communications |
Volume | 16 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2017 Oct |
Keywords
- GFDM
- OFDM
- SIR
- Synchronization
- carrier frequency offset
- filter design
- phase noise
- timing offset
ASJC Scopus subject areas
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics