For information transmission a binary symmetric channel is used. There is also another noisy binary symmetric channel (feedback channel), and the transmitter observes without delay all the outputs of the forward channel via that feedback channel. The transmission of an exponential number of messages (i.e. the transmission rate is positive) is considered. The achievable decoding error exponent f...

In this paper, we propose an orthogonal frequency division multiplexing–based (OFDMbased) underwater acoustic multimedia system. An essential feature of this system is that it offers greater power and schemes with significant error protection for the transmission of sensor data information requiring a higher quality of service (QoS). To realize maximum resource utilization or minimum total tran...

a parallel hybrid system of hmm and gmm modeling techniques was implemented and used in a telephony speaker verification and identification system. spectral subtraction and weighted projection measure were used to render this system more robust against additional noise. cepstral mean subtraction method was also applied for the compensation of convolution noise due to transmission channel degrad...

Wireless sensors are increasingly adopted in manufacturing and vehicular systems for monitoring critical components under continuous operation. Many such components move rapidly and frequently in metallic containments with challenging radio propagation characteristics. For wireless sensors mounted on rotating structures, previous experimental studies observed an eminent increase in packet trans...

We propose and analyze the performance of an algorithm for integrated power control and adaptive modulation/coding to achieve a speciied range of packet error rate for real-time applications in broadband wireless packet-switched networks. The algorithm applies the Kalman-lter method 1] for power control, and adapts packet transmission to an appropriate modulation level, according to the packet ...

In this paper we evaluate the data transmission performance of a generalized multiple-tree-based overlay architecture for peer-to-peer live streaming that employs multipath transmission and forward error correction. We give mathematical models to describe the error recovery in the presence of packet losses. We evaluate the data distribution performance of the overlay, its asymptotic behavior, t...

Typical error control techniques are not very well suited for video transmission. On the other hand, video transmission over error prone channels has increased greatly, e.g., over IP and wireless networks. These two facts combined together provided the necessary motivation for the development of a new set of techniques (error concealment) capable of dealing with transmission errors in video sys...

Robust video transmission over wireless channels is very critical, due to channel impairments and to their effect on the compressed bitstream. In order to improve error resilience and, consequently, the received video quality, a novel unequal error protection (UEP) technique (fixed-packet-length transcoding assisted UEP, FPT-UEP) is proposed in the paper, and applied to the case of MPEG-4 video...

In the wireless video communication system, transmission distortion, caused by packet transmission errors, is a non-linear time-variant function of video frame statistics, channel condition and system parameters. By modeling the transmission distortion process as output of the random video sequence and channel error processes, the system can be modeled as an equivalent non-linear time-variant s...

Srinath R. Joshi. Packet Loss Recovery for Unicast Interactive Video Transmission over the Internet. (Under the direction of Professor Injong Rhee.) The current Internet is not reliable; packet loss rates are frequently high, and varying over time. Transmitting high-quality interactive video over the Internet is challenging because the quality of compressed video is very susceptible to packet l...