the range imaging based on conventional pulse compression technique requires lfm signal that sampled by nyquist rate. in order to high resolution increased in range in pulse compression, so the lfm bandwidth has to increase. consequently this procedure dictated limitations on adc sampling. the stretch processing is one of techniques decreasing nyquist rate in radars. in this method the nature o...

The current trend in the telecommunication world is the proposal of a universal telecommunication system deriving from the convergence between mobile telephony and data transmission. To achieve such a convergence in an efficient way, it is presumably necessary to utilize a network platform totally based on TCP/IP architecture (an “All-IP Network”). However, the encapsulation process of TCP/IP w...

We are applying bandwidth compression to enhance performance of FPGA-based custom computing. This paper presents and evaluates hardware design of a bandwidth compressor and decompressor for a floating-point data stream of various bit width. We show their structures parameterized for a bit width of an input word. Through FPGAbased prototype implementation, we evaluate the resource utilization, f...

Abstract— With the fast progression of data exchange in electronic way, information security is becoming more important in data storage and transmission. While storing and transmitting multimedia data are not easy and they need large storage devices and high bandwidth network systems. Compression and encryption technologies are important to the efficient solving of network bandwidth and securit...

As a major transport protocol of current Internet, TCP has the problem of the large header overhead on bandwidth-limited links. Header compression has been proven to be efficient for using TCP over bandwidth-limited reliable links. Unfortunately, existing TCP/IP header compression schemes do not work well on noisy links, especially the one with high bit error rate and long roundtrip time. In ad...

The H.264/AVC standard, popular in commercial video recording and distribution, has also been widely adopted for high-definition video compression in Intelligence, Surveillance and Reconnaissance and for Flight Test applications. H.264/AVC is the most modern and bandwidth-efficient compression algorithm specified for video recording in the Digital Recording IRIG Standard 106-11, Chapter 10. Thi...

In this paper, we propose a multirate teletraffic loss model of a single link with certain bandwidth capacity that accommodates Poisson arriving calls, which can tolerate bandwidth compression (elastic traffic), under the threshold policy. When compression occurs, the service time of new and in-service calls increases. The threshold policy provides different QoS among service-classes by limitin...