نتایج جستجو برای: quadrature error compensation
تعداد نتایج: 303637 فیلتر نتایج به سال:
This article proposes a reconfigurable wideband transfer function design for quadrature Σ∆ A/D converters combined with digital post-compensation of frequency-selective mirror-frequency interference (MFI) induced by the inherent mismatches between the in-phase (I) and quadrature (Q) rails of the receiver. When receiving wideband waveforms, such as LTE signals, it is crucial for the compensation...
Comparative Analysis of Estimation Techniques for IQ Imbalance for OFDM Based WiMAX System: A Review
Wireless communication is becoming very popular now a days. Worldwide Interoperability for Microwave Access (WiMAX) system in wireless communication plays an important role and has been attracting the researchers in the last decade. WiMAX system has provided anefficient solution for ‘last mile’ access technology to provide high data rate internet access for residential as well as small business...
چکیده ندارد.
Szegő quadrature rules are commonly applied to integrate periodic functions on the unit circle in the complex plane. However, often it is difficult to determine the quadrature error. Recently, Spalević introduced generalized averaged Gauss quadrature rules for estimating the quadrature error obtained when applying Gauss quadrature over an interval on the real axis. We describe analogous quadrat...
In this paper, the coherent optical – orthogonal frequency division modulation (CO-OFDM) technique for transmission of optical signal at 10Gbps data rate has been investigated. The CO-OFDM technique has been evaluated using quadrature phase shift keying (QPSK) modulation technique. The use of Dispersion compensation fiber (DCF) in various compensation schemes, i.e., post, pre and symmetrical co...
In this paper, a wideband vector-sum phase shifter with linearity enhancement technology is proposed to minimize error. The digital synthesizes the output phases by modulating and summing four quadrature signals. A common-source stage transformer-based matching network quadrature-all-pass filter (QAF) are utilized for signals generation within wideband. Besides, decrease influence of parasitics...
We experimentally demonstrate and characterize the performance of a 400-Gbit/s orbital angular momentum (OAM) multiplexed free-space optical link over 120 m on the roof of a building. Four OAM beams, each carrying a 100-Gbit/s quadrature-phase-shift-keyed channel are multiplexed and transmitted. We investigate the influence of channel impairments on the received power, intermodal crosstalk amon...
OSNR monitoring is indispensable for coherent systems to ensure robust, reliable network operation and potentially enable impairment-aware routing for future dynamic optical networks. In a long-haul transmission link with chromatic dispersion (CD) and fiber nonlinearity, it is difficult to distinguish between amplifier noise and fiber nonlinearity induced distortions from received signal distri...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید