This work presents a novel feedback rate regulator using the multiple leaky bucket (MLB) for variable bit rate (VBR) self-similar traffic that is based on the traffic load prediction by time-delayed neural networks in ATM networks. In the MLB mechanism, the leak rate and buffer capacity of each leaky bucket (LB) can be dynamically adjusted based on the buffer occupancy. A finite-duration impuls...

Absfmct A Hopfield neural network based block truncation coding (BTC) technique is presented in this paper. For this scheme, BTC is formulated as the minimization of a cost function in which the bit map distributions for the blocks are explicitly included. It is explained that this cost function may also be interpreted as a measure of the block detail. Based on the observation of the final valu...

In this paper a Markov model is developed that, given a simple description of the network delay and the packet interarrival times of a variable bit rate video stream, can be used to dimension the two important parameters of the dejittering process: the capacity Q the dejittering buffer should have and the dejittering delay Tjit the dejittering process should wait before starting the playout of ...

We propose a novel algorithm to efficiently transmit multiple variable-bit-rate (VBR) video streams from a base station to mobile receivers in wide-area wireless networks. The algorithm transmits video streams in bursts to save the energy of mobile devices. A key feature of the new algorithm is that it dynamically controls the buffer levels of mobile devices receiving different video streams ac...

Asynchronous Transfer Mode (ATM) technology performance is evaluated for Class C (variable bit rate, asynchronous) data transfer, as would be typically found when migrating legacy applications to an ATM environment. Of particular interest are the end-to-end latencies obtainable using ATM networks to transfer time critical data. Latencies obtained using Classical IP over ATM and raw ATM using th...

We consider the problem of data retrieval from disk storage in a video server where the data is stored in constant size blocks. The two critical resources of a video server are the amount of disk I/O bandwidth and the main memory buffer required to support a video stream. We propose a new algorithm that allows us to determine the cost-optimal trade-off between these two server resources as well...

We assume a linear equidistance antenna array as the receiver for a fixed frame-length multipleaccess system which employs variable-gain receiver power and repetition encoding. We propose a robust Maximum A posteriori Probability (MAP) Blind Bit-Rate Detector (BBRD). This detector considers the Rate Detection (RD) as a multi-hypothesis test and maximizes the Likelihood Functions (LF)s to find t...

Wireless OFDM systems have attractive means for adapting wireless transmission to a given situation: one possibility is to assign a varying number of subcarriers to wireless terminals for downlink communication. Deciding how many and which subcarriers to assign to a given terminal is a difficult problem. This paper concentrates on deciding how many: we use the relative length of a terminal’s qu...

Despite encryption, you can extract a fair amount of information from VoIP traffic based on variable bit rates. Previous research shows that the language and specific phrases can be identified in this manner. DiOrio’s research looks at detecting different accents based on the encoding bit rate. Preliminary results show that the average accuracy of differentiating accent pairs is 73%, with the b...

As visualization tools get more complicated, users often find it increasingly difficult to learn interaction sequences, recall past queries, and interpret visual states. We examine a query-to-question (Q2Q) supporting system that takes advantage of natural language generation (NLG) techniques to automatically translate and display query interactions as natural language questions. We focus on a ...