Advanced

A sign-bit auto-correlation architecture for fractional frequency offset estimation in OFDM

Diaz, Isael LU ; Wilhelmsson, Leif; Rodrigues, Joachim LU ; Löfgren, Johan LU ; Olsson, Thomas and Öwall, Viktor LU (2010) IEEE International Symposium on Circuits and Systems (ISCAS), 2010 p.3765-3768
Abstract
This paper presents an architecture of an auto-correlator for Orthogonal Frequency Division Multiplexing systems. The received signal is quantized to only the sign-bit, which dramatically simplifies the frequency offset estimation. Hardware cost is reduced under the assumption that synchronization during acquisition does not have to be very accurate, but sufficient for coarse estimation. The architecture is synthesized towards a 65nm low-leakage high threshold standard cell CMOS library. The proposed architecture results in area reduction of 93% if compared to typical 8-bit implementation. The area occupied by the architecture is 0.063mm^2. The architecture is evaluated for WLAN, LTE and DVB-H. Power simulations for DVB-H transmission... (More)
This paper presents an architecture of an auto-correlator for Orthogonal Frequency Division Multiplexing systems. The received signal is quantized to only the sign-bit, which dramatically simplifies the frequency offset estimation. Hardware cost is reduced under the assumption that synchronization during acquisition does not have to be very accurate, but sufficient for coarse estimation. The architecture is synthesized towards a 65nm low-leakage high threshold standard cell CMOS library. The proposed architecture results in area reduction of 93% if compared to typical 8-bit implementation. The area occupied by the architecture is 0.063mm^2. The architecture is evaluated for WLAN, LTE and DVB-H. Power simulations for DVB-H transmission shows a power consumption of 4.8uW per symbol. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to conference
publication status
published
subject
keywords
frequency offset, DVB-H, WLAN, Sign-Bit, OFDM, LTE
pages
4 pages
conference name
IEEE International Symposium on Circuits and Systems (ISCAS), 2010
external identifiers
  • WOS:000287216003246
  • Scopus:77955995246
project
Radiosystem: Multibase (EU, VÖ/OE)
language
English
LU publication?
yes
id
fa2a23bc-2291-404f-9227-b05ab3bb7f50 (old id 1529099)
date added to LUP
2010-01-18 11:34:16
date last changed
2016-10-13 04:57:12
@misc{fa2a23bc-2291-404f-9227-b05ab3bb7f50,
  abstract     = {This paper presents an architecture of an auto-correlator for Orthogonal Frequency Division Multiplexing systems. The received signal is quantized to only the sign-bit, which dramatically simplifies the frequency offset estimation. Hardware cost is reduced under the assumption that synchronization during acquisition does not have to be very accurate, but sufficient for coarse estimation. The architecture is synthesized towards a 65nm low-leakage high threshold standard cell CMOS library. The proposed architecture results in area reduction of 93% if compared to typical 8-bit implementation. The area occupied by the architecture is 0.063mm^2. The architecture is evaluated for WLAN, LTE and DVB-H. Power simulations for DVB-H transmission shows a power consumption of 4.8uW per symbol.},
  author       = {Diaz, Isael and Wilhelmsson, Leif and Rodrigues, Joachim and Löfgren, Johan and Olsson, Thomas and Öwall, Viktor},
  keyword      = {frequency offset,DVB-H,WLAN,Sign-Bit,OFDM,LTE},
  language     = {eng},
  pages        = {3765--3768},
  title        = {A sign-bit auto-correlation architecture for fractional frequency offset estimation in OFDM},
  year         = {2010},
}