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This paper investigates an improved integer frequency offset (IFO) estimator based on guard band power ratio detection (PRD) in orthogonal frequency division multiplexing (OFDM) systems, which can work with large residual fractional frequency offsets (FFOs) and therefore large inter-carrier-interference (ICIs), resulting in excellent performance in very low signal-to-noise ratio (SNR) environments...
A joint channel estimation and data detection scheme by using Markov chain Monte Carlo (MCMC) is proposed for MIMO-OFDM systems with multi-tone narrow-band interference (MTNBI). The channel impulse response, the noise variance and the indicator of the impulse noise can be estimated accurately, and then the receiver knows whether the signal is interfered by the narrow band interference. One of the...
Low complexity space-frequency turbo detection and decoding schemes are proposed for multi-user space-time block-coded (STBC) block transmission systems, including cyclic prefix based single-carrier block transmission (CP-SCBT) system and OFDM system. Using the algebraic properties of these systems, we give the implementation of MMSE- and match-filter-based (MF) turbo detector in the frequency domain...
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