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- W138255926 abstract "AbstractSystems using Orthogonal Frequency Division Multiplexing (OFDM) suffer with carrier frequency offset (CFO), in phase and quadrature phase imbalance (I/Q) due to which there will be large performance degradation. The CFO, I/Q imbalance are caused due to mismatch of carrier frequency at the transmitter and local oscillator frequency at the receiver. This paper presents a novel approach for joint estimation of I/Q imbalance, CFO and Channel Estimation for Multiple-Input Multiple-Output (MIMO) OFDM systems. A new energy parameter called φ is introduced, and from this parameter φ we can jointly estimate CFO, I/Q imbalance irrespective of channel estimation. The proposed method uses an optimal training block with one or two training sequences. For estimation of two repeated sequences, a two-step approach is proposed. From the simulation results we show that the Mean-Square Error (MSE) of this method is close to Cramer-Rao Bound (CRB).KeywordsCFOChannel responseI/Q imbalanceMIMOOFDM" @default.
- W138255926 created "2016-06-24" @default.
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- W138255926 date "2012-01-01" @default.
- W138255926 modified "2023-09-23" @default.
- W138255926 title "A Novel Approach for MIMO OFDM Systems to Estimate I/Q Imbalance, CFO, Channel Response Using Training Sequences" @default.
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- W138255926 doi "https://doi.org/10.1007/978-3-642-27299-8_17" @default.
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