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Eye localization is a key step in many face analysis related applications. In this paper, we present a novel eye localization method based on a group of trained filters called correlation filter bank (CFB). We formulate the eye localization problem as an optimization problem with a well-defined cost function based on CFB. The CFB is trained with an EM-like adaptive clustering approach. The trained...
Future wireless communications should be designed efficiently to support multi-mode operations for different types of applications, such as machine-to-machine, video streaming, web browsing and voice. In the physical layer multi-mode operation could include the coexistence of single carrier and multicarrier modulations. To reduce overall complexity and power consumption, it is highly desirable to...
In this paper, we compare three filter bank multicarrier (FBMC) techniques, i.e., Orthogonal Frequency Division Multiplexing (OFDM), OFDM-Offset Quadrature Amplitude Modulation (OFDM-OQAM) and wavelet packet modulation (WPM), based on multiple criteria, including bandwidth efficiency, computational complexity, latency, out-of-band emission, peak-to-average power ratio, and sensitivity to timing and...
Dynamic spectrum sharing is a key technique to meet the high data rate demands of future wireless systems evolving towards heterogeneous networks. To make the best use of available frequency resources without creating interference to neighbor nodes, spectrally contained and scalable waveforms are needed. While OFDM has become the most popular multicarrier modulation (MCM) scheme, it suffers from high...
In this article, we propose a transceiver architecture based on orthogonal frequency-division multiplexing (OFDM) with transmit and receive windowing to reduce spectral leakage and reject adjacent channel interference (ACI). The transceiver enables the utilization of unused subbands in a fragmented spectrum with low complexity, which may be used in cognitive radio systems. We first show a multicarrier...
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