Correction and compensation of I/Q imbalance and multipath channel for OFDM receivers
MetadataShow full item record
This paper presents an adaptive scheme in overcoming signal distortion, caused by I/Q imbalance and multipath propagation, in an OFDM receiver. Estimation of I/Q imbalance and channel parameters is performed in the frequency domain with the aid of pilot tones. These estimated values are then used to adjust the gain and phase to reduce the distortion caused by I/Q imbalance. The resulting less distorted signal is then subjected to a simpler post compensation process to remove the effects of the multipath channel and any residue frequency-dependent I/Q imbalance. MATLAB simulations have demonstrated that the proposed approach provides substantial improvements to the system performance.
Showing items related by title, author, creator and subject.
High Penetration of Rooftop Photovoltaic Cells in Low Voltage Distribution Networks: Voltage Imbalance and ImprovementShahnia, Farhad; Ghosh, A. (2014)Installation of domestic rooftop photovoltaic cells (PVs) is increasing due to feed–in tariff and motivation driven by environmental concerns. Even though the increase in the PV installation is gradual, their locations ...
Haq, K.; Chung, Kah-Seng (2013)It is well known that dual-branch receivers suffer from in-phase (I) and quadrature (Q) imbalance problems resulting in distortion and poor signal quality. This paper presents a novel technique, incorporating adaptive ...
Order Imbalance, Market Returns and Macroeconomic News: Evidence from the Australian Interest Rate Futures MarketSmales, Lee (2012)The relationship between order imbalance, market returns and macroeconomic news is examined in the context of the Australian interest rate futures market. Contemporaneous order imbalance exerts a significant impact on ...