TY - GEN
T1 - Blind multiple carrier frequency offsets estimation for OFDM with distributed multi-antenna receiver
AU - Feng, Yunqi
AU - Zhang, Weile
AU - Ge, Yinghao
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/7/2
Y1 - 2017/7/2
N2 - In this paper, two blind carrier frequency offset (CFO) estimators for orthogonal frequency division multiplexing (OFDM) with distributed multi-antenna receiver are designed. We first propose a pairing based efficient estimator (PBEE), where multiple CFOs are divided and then estimated in pairs of two with a carefully designed cost function. This cost function is proven to be exactly a cosine function parameterized by the two CFOs even with the effect of noise. Consequently, the CFOs estimate can be obtained in closed-form after a one-dimensional search. Moreover, in order to improve the estimation performance, we further develop the maximum likelihood (ML) estimator. The computationally inefficient multi-dimensional search of ML estimator can be solved by introducing an extra one-step adjustment to the PBEE. Both the two estimators support fully loaded transmissions, which can save the spectral efficiency. Numerical results are provided to corroborate the proposed studies.
AB - In this paper, two blind carrier frequency offset (CFO) estimators for orthogonal frequency division multiplexing (OFDM) with distributed multi-antenna receiver are designed. We first propose a pairing based efficient estimator (PBEE), where multiple CFOs are divided and then estimated in pairs of two with a carefully designed cost function. This cost function is proven to be exactly a cosine function parameterized by the two CFOs even with the effect of noise. Consequently, the CFOs estimate can be obtained in closed-form after a one-dimensional search. Moreover, in order to improve the estimation performance, we further develop the maximum likelihood (ML) estimator. The computationally inefficient multi-dimensional search of ML estimator can be solved by introducing an extra one-step adjustment to the PBEE. Both the two estimators support fully loaded transmissions, which can save the spectral efficiency. Numerical results are provided to corroborate the proposed studies.
KW - Carrier frequency offset (CFO)
KW - Distributed multi-antenna receiver
KW - Orthogonal frequency division multiplexing (OFDM)
UR - https://www.scopus.com/pages/publications/85045284515
U2 - 10.1109/PIMRC.2017.8292525
DO - 10.1109/PIMRC.2017.8292525
M3 - 会议稿件
AN - SCOPUS:85045284515
T3 - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
SP - 1
EP - 6
BT - 2017 IEEE International Symposium on Personal, Indoor and Mobile Radio Communications
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 28th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2017
Y2 - 8 October 2017 through 13 October 2017
ER -