Abstract
| Original language | Undefined |
|---|---|
| Title of host publication | IEEE 73rd Vehicular Technology Conference Fall (VTC 2011-Spring) |
| Place of Publication | USA |
| Publisher | IEEE Vehicular Technology Society |
| Pages | 1-5 |
| Number of pages | 5 |
| ISBN (Print) | 978-1-4244-8329-7 |
| DOIs | |
| Publication status | Published - May 2011 |
| Event | IEEE 73rd Vehicular Technology Conference, VTC 2011-Spring - Budapest, Hungary Duration: 15 May 2011 → 18 May 2011 Conference number: 73 http://www.ieeevtc.org/vtc2011spring/ |
Publication series
| Name | |
|---|---|
| Publisher | IEEE Vehicular Technology Society |
Conference
| Conference | IEEE 73rd Vehicular Technology Conference, VTC 2011-Spring |
|---|---|
| Abbreviated title | VTC Spring 2011 |
| Country | Hungary |
| City | Budapest |
| Period | 15/05/11 → 18/05/11 |
| Internet address |
Keywords
- METIS-278715
- Frequency division multiplexing
- Fourier transforms
- Differential phase shift keying
- IR-77922
- EWI-20177
- Terms—Correlation
- Modulation
Cite this
}
A Correlating Receiver for OFDM at Low SNR. / Kokkeler, Andre B.J.; Smit, Gerardus Johannes Maria.
IEEE 73rd Vehicular Technology Conference Fall (VTC 2011-Spring). USA : IEEE Vehicular Technology Society, 2011. p. 1-5.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review
TY - GEN
T1 - A Correlating Receiver for OFDM at Low SNR
AU - Kokkeler, Andre B.J.
AU - Smit, Gerardus Johannes Maria
N1 - eemcs-eprint-20177
PY - 2011/5
Y1 - 2011/5
N2 - By extending OFDM symbols, acceptable BER performance can be achieved at low SNRs. Two alternative differential receiver architectures are presented, a receiver based on a FX correlator (Fourier transformation before correlation) and based on an XF correlator (correlation before Fourier transformation). To reduce the complexity and hence the power consumption of both the ADC and the first digital processing stage single- or two bit quantization is used. The receiver based on the XF correlator is more suited to exploit such coarse quantization. Two basic effects are visible if coarse quantization is used. First, the BER performance is reduced due to the introduction of quantization errors. Second, beyond certain SNR levels, the BER performance does not increase due to the correlation between quantization errors. Furthermore, oversampling increases BER performance considerably. For single bit quantization with oversampling, acceptable BERs (< 10 −3) can be achieved for a limited SNR range for symbol extension factors of 32 and 64. In case of two bit quantization without oversampling, the results are comparable with single bit quantization with two times oversampling. For two bit quantization in combination with two times oversampling, acceptable BERs are achieved for symbol extension factors 8, 16, 31 and 64.
AB - By extending OFDM symbols, acceptable BER performance can be achieved at low SNRs. Two alternative differential receiver architectures are presented, a receiver based on a FX correlator (Fourier transformation before correlation) and based on an XF correlator (correlation before Fourier transformation). To reduce the complexity and hence the power consumption of both the ADC and the first digital processing stage single- or two bit quantization is used. The receiver based on the XF correlator is more suited to exploit such coarse quantization. Two basic effects are visible if coarse quantization is used. First, the BER performance is reduced due to the introduction of quantization errors. Second, beyond certain SNR levels, the BER performance does not increase due to the correlation between quantization errors. Furthermore, oversampling increases BER performance considerably. For single bit quantization with oversampling, acceptable BERs (< 10 −3) can be achieved for a limited SNR range for symbol extension factors of 32 and 64. In case of two bit quantization without oversampling, the results are comparable with single bit quantization with two times oversampling. For two bit quantization in combination with two times oversampling, acceptable BERs are achieved for symbol extension factors 8, 16, 31 and 64.
KW - METIS-278715
KW - Frequency division multiplexing
KW - Fourier transforms
KW - Differential phase shift keying
KW - IR-77922
KW - EWI-20177
KW - Terms—Correlation
KW - Modulation
U2 - 10.1109/VETECS.2011.5956427
DO - 10.1109/VETECS.2011.5956427
M3 - Conference contribution
SN - 978-1-4244-8329-7
SP - 1
EP - 5
BT - IEEE 73rd Vehicular Technology Conference Fall (VTC 2011-Spring)
PB - IEEE Vehicular Technology Society
CY - USA
ER -