Abstract
This paper presents a new mathematical analysis for the evaluation of the average signal-to-interference plus noise ratio (SINR) of orthogonal frequency division multiplexing (OFDM) in the presence of carrier frequency offset (CFO). CFO destroys the orthogonality between different subcarriers giving rise to inter-carrier interference (ICI). The SINR of wireless OFDM in the presence of CFO and frequency-selective fading becomes a ratio of correlated random variables, and the exact evaluation of its average by using direct methods requires a huge computational effort. In this paper, we present an indirect method that leads to a new exact simpler expression for the average SINR over Rayleigh multipath fading channels.
| Original language | English |
|---|---|
| Article number | 5427429 |
| Pages (from-to) | 975-979 |
| Number of pages | 5 |
| Journal | Wireless Communications, IEEE Transactions on |
| Volume | 9 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 2010 |
Keywords
- OFDM modulation
- Rayleigh channels
- intercarrier interference
- multipath channels
- Rayleigh multipath fading channel
- SINR analysis
- carrier frequency offset
- frequency-selective fading
- mathematical analysis
- orthogonal frequency division multiplexing
- random variables
- signal-to-interference plus noise ratio
- wireless OFDM
- Fading
- Frequency division multiplexing
- Interference
- Mathematical analysis
- OFDM
- Random variables
- Signal to noise ratio
- System performance
- Wideband
- Communication system performance
- fading channels
- interference
- orthogonal division multiple access.