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The Multi-Path Transmission Control Protocol (MPTCP) is the new concurrent multi-path transfer extension for the widely-deployed Transmission Control Protocol (TCP). Of course, having multiple and possibly highly dissimilar paths for transmission is a challenge for the management of the send and receive buffers, since optimal throughput is desired with a reasonable allocation of the limited memory...
Because many factors affect the azimuth resolution of bistatic SAR, it is a complex problem to design a proper bistatic configuration to achieve good resolution. This poster analyzes each key parameter that affects the azimuth resolution by keeping the others constant in the spatial invariant case. Then, simulation results are presented to validate the theoretical analysis. Finally, a method for bistatic...
This paper presents a method for utilizing the on-chip PWM (pulse width modulated) generators on a TMS320C240 DSP for digital-to-analog (D/A) conversion. The method involves analog low-pass filtering the PWM signal to remove high frequency components, leaving only the low-frequency content. Theoretical and experimental results are presented to quantify the achievable bit resolution. In addition, analog...
A printed ultra-wideband (UWB) antenna operating at the frequency range of 2.9-11.0 GHz is proposed for diversity applications. By adopting two symmetrical P-shaped radiators, the antenna presents wideband impedance matching characteristic. The antenna can achieve good impedance matching and improved isolation by notching a slot at the upper centre portion of the ground plane and inserting a stub...
The design of a compact ultra-wideband printed antenna is presented. By using two partly circulars patch with resonating elements, a bandwidth of more than 185%. The proposed radiator is quasi omni-directional with appreciable gain throughout the band. The performance is demonstrated through measurements and calculations with a commercially available field.
The underwater acoustic channel is very complex where Doppler frequency offsets, narrow bandwidth, serious multi-path time delay interference and frequency selective deep fading obstruct the development of high speed and fidelity underwater data transmissions. Orthogonal Frequency Division Multiplexing (OFDM) is a kind of novel paralleling transmission technology. In this paper, we mainly discuss...
The main characteristics of underwater acoustic (UWA) channel are Narrow bandwidth, strong interference caused by multi-path and severe noise. At the same time, these disadvantages have been always obstructed the development of high speed and fidelity underwater data transmission. This paper discusses the performance of integration of Trellis-coded modulation (TCM) and OFDM; furthermore, this transmission...
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