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This work presents an effective cross-layer video streaming algorithm over mobile ad hoc networks. The proposed algorithm selects the most efficient PHY mode of IEEE 802.11 multi-rate service based on the information available at the application, MAC, and physical layers at each node in the distributed way in order to minimize end-to-end delay and remain packet loss rate in tolerable range at the...
This work analyzes the high-SNR asymptotic error performance when the number of bits that arrive at the transmitter during any time slot is random, the channel experiences outage, and the delivery of bits at the receiver must adhere to a strict delay limitation. It is shown that for a class of arrival processes whose burstiness scales down linearly with 1radic(logSNR) the occurrences of channel errors...
In this paper, we provide a saturation throughput analysis of the IEEE 802.11 protocol at the data link layer by including the impact of both transmission channel and capture effects in Rayleigh fading environment. Impacts of both non-ideal channel and capture effects, specially in an environment of high interference, become important in terms of the actual observed throughput. As far as the 4-way...
A scheme that exploits the broadcast nature of the wireless communication in order to achieve multicast content delivery is presented in this paper. As opposed to broadcasting, this method enables the clients to determine on-line the delivered content, and thus preserves the advantages of an individual service. On the other hand, a multicast content delivery is much more efficient than a unicast content...
In this paper, we propose a cross-layer optimization approach that exploits retransmission diversity in wireless CDMA communications. Conventionally, data packets that are not correctly detected are usually dropped. These dropped packets can be used to help data packet detection. By exploiting all the retransmitted packets, data packets can be correctly detected with higher probability. The proposed...
This paper explores the attributes, layering models and objective functions in cross layer designs for mobile ad hoc wireless networks by taking all the statistical characteristics and constraints from the physical (PHY) layer, media access control (MAC) layer and network (NET) layer into consideration. This paper reviews the entire network optimization across all the PHY/MAC/NET layers. At the PHY...
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