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This paper presents a built-in self test pump actuated by piezoelectric bimorphs for fluidic systems. The sensor fabricated by MEMS ensures the flow to be 0.5μ l/s. There are two piezoelectric vibrators in the pump and the check valve is metal cantilever beam. The pump is characterized by integrated structure, flow with built-in self test, wide frequency response, etc. The size of the piezoelectric...
Orthogonal frequency division multiplexing (OFDM) is an effective technique for combating radio channel multipath fading and for high-bit-rate transmission over wireless channels and it is extensively used in modern wireless local area network systems to support high performance bandwidth-efficient multimedia services. Easily applied channel estimation and simple channel equalization are important...
Orthogonal frequency division multiplexing (OFDM) is an effective technique for combating multipath fading and for high-bit-rate transmission over wireless channels and it is extensively used in modern wireless systems to support high performance bandwidth-efficient multimedia services. The accuracy, robustness and easy application of the channel estimation scheme are important for the wireless broadband...
Due to the efficiency of mitigation multipath delay spread, orthogonal frequency division multiplexing is extensively used in the wireless local area network domain, such as the IEEE 802.11a standard defined by the IEEE 802.11 standardization group and the HIPERLAN/2 defined by the European Telecommunication Standards Institute Project on Broadband Radio Access Networks. Orthogonal frequency division...
As an effective technique for combating multipath fading and for high-bit-rate transmission over wireless channels, orthogonal frequency division multiplexing is extensively used in modern digital television terrestrial broadcasting systems to support high performance bandwidth-efficient multimedia services. Accurate channel estimation is important for the application of simple channel equalization...
As an effective technique for combating multipath fading and for high data rate transmission over wireless channels, orthogonal frequency division multiplexing (OFDM) is extensively used in wireless local area network (WLAN) systems to support high performance bandwidth-efficient multimedia services. The efficient implementation of several tasks at the receiver becomes crucial in OFDM-based high-speed...
As an effective technique for combating multipath fading and for high-bit-rate transmission over wireless channels, orthogonal frequency division multiplexing (OFDM) is extensively used in modern digital television terrestrial broadcasting (DTTB) systems to support high performance bandwidth-efficient multimedia services. In this paper, a robust channel estimation scheme is proposed for the time domain...
WLAN (wireless local area network) access providing high data rate has recently been deployed and worldwide extended. Most of WLAN standards are OFDM-based (orthogonal frequency division multiplexing) because of the good behavior of this technique in multi-path radio channels. However, several aspects have to be taken into account when an OFDM system is implemented. One of the most critical issues...
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