caa a22 4500 606206736 CHVBK 20210128101012.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s00034-015-0025-5 doi (NATIONALLICENCE)springer-10.1007/s00034-015-0025-5 A New Approach to Sign-Bit-Based Parameter Estimation in OFDM Receivers [Elektronische Daten] [Isael Diaz, Leif Wilhelmsson, Paschalis Sofotasios, Yun Miao, Siyu Tan, Ove Edfors, Viktor Öwall] This article combines algorithm development, thorough analysis and implementation of sign-bit (SB) estimation techniques for symbol timing, carrier frequency offset (CFO) and signal-to-noise ratio (SNR) in orthogonal frequency division multiplexing receivers. The SB estimation is compared in terms of performance and hardware complexity to an equivalent implementation with higher quantization. The techniques are demonstrated by simulation of a SB time/frequency and SB-SNR estimator for 3rd Generation Partnership Project long-term evolution (LTE) cell search in 65-nm technology operating at nominal voltage of 1.2V. According to post-layout power simulations with toggling information, the architecture estimates the corresponding CFO and SNR for as little as $$479\,\upmu \hbox {W}$$ 479 μ W average power for LTE-R8/10, while occupying a silicon area as small as $$0.03\,\hbox {mm}^2$$ 0.03 mm 2 . Even though SB estimation experiences some relative performance penalty when compared to 8-bit quantization, this paper demonstrates various advantages and the potential of employing these techniques in low-complexity terminals. Springer Science+Business Media New York, 2015 OFDM nationallicence CFO nationallicence Symbol timing nationallicence Receiver design nationallicence Time synchronization nationallicence SNR nationallicence LTE nationallicence Diaz Isael Department of Electrical and Information Technology, Lund University, Lund, Sweden aut Wilhelmsson Leif Ericsson Research, Scheelevägen 19, 221 83, Lund, Sweden aut Sofotasios Paschalis Department of Electronics and Communications Engineering, Tampere University of Technology, 33101, Tampere, Finland aut Miao Yun Department of Electrical and Information Technology, Lund University, Lund, Sweden aut Tan Siyu Department of Electrical and Information Technology, Lund University, Lund, Sweden aut Edfors Ove Department of Electrical and Information Technology, Lund University, Lund, Sweden aut Öwall Viktor Department of Electrical and Information Technology, Lund University, Lund, Sweden aut Circuits, Systems, and Signal Processing Springer US; http://www.springer-ny.com 34/11(2015-11-01), 3631-3660 0278-081X 34:11<3631 2015 34 34 https://doi.org/10.1007/s00034-015-0025-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00034-015-0025-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Diaz Isael Department of Electrical and Information Technology, Lund University, Lund, Sweden aut NATIONALLICENCE 700 1- Wilhelmsson Leif Ericsson Research, Scheelevägen 19, 221 83, Lund, Sweden aut NATIONALLICENCE 700 1- Sofotasios Paschalis Department of Electronics and Communications Engineering, Tampere University of Technology, 33101, Tampere, Finland aut NATIONALLICENCE 700 1- Miao Yun Department of Electrical and Information Technology, Lund University, Lund, Sweden aut NATIONALLICENCE 700 1- Tan Siyu Department of Electrical and Information Technology, Lund University, Lund, Sweden aut NATIONALLICENCE 700 1- Edfors Ove Department of Electrical and Information Technology, Lund University, Lund, Sweden aut NATIONALLICENCE 700 1- Öwall Viktor Department of Electrical and Information Technology, Lund University, Lund, Sweden aut NATIONALLICENCE 773 0- Circuits, Systems, and Signal Processing Springer US; http://www.springer-ny.com 34/11(2015-11-01), 3631-3660 0278-081X 34:11<3631 2015 34 34