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Automotive and consumer multi-channel 24 b audio systems have demanded low-cost digital-to-analog converters (DACs) which offer wide dynamic range, high linearity, small die size, and low power consumption such that the system can be housed in a small low-cost plastic package. Several 120 dB SNR audio ΔΣ DACs have been reported using either switched-capacitor or continuous-time techniques. This paper...
Class D amplifiers are becoming the most feasible solution for embedded audio application. However, distortions due to the non-linear nature of switching stage are the main drawback for this amplifier topology. This paper discusses the design and implementation of high fidelity audio class D using sliding mode control scheme. This design method proves to be a cost effective solution for industrial...
In this paper, the soft decision decoding method using CSI (channel state information) for DCM that is used for high data rate (320, 400, 480 Mbps) in MB-OFDM (multi-band orthogonal frequency division multiplexing) system is investigated. OFDM based on UWB system has been proposed by the MBOA to provide very high data rate wireless communication. And CSI can be used in the soft-decision process to...
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