, a salient feature of our algorithm is that it performs well in both heavy and light contention cases regardless of the packet sizes and physical versions. Moreover, the adaptive window adjustment algorithm is simpler than previously proposed schemes in that no live measurement of the WLAN traffic

be represented with if-then rules. The interpretation of the controller is fuzzy but the controller is processing exact input-data and is producing exact output-data in a deterministic way. However, Backoff time computation schemes, namely: pseudorandom backoff (PB) time, exponential backoff (EB) time and random

be represented by if-then-else rules. The controller is processing exact input data and is producing exact output data in a deterministic way. However, Backoff time computation schemes, namely: pseudorandom backoff (PB) time, exponential backoff (EB) time and random backoff (RB) time that are applicable

exponential backoff scheme as the proposed-2 DRMA to further improve the data message delay. By the performance evaluation using computer simulations, weshow that the proposed schemes reduce the data message delay without degrading the voice packet loss probability comparing to the conventional DRMA. 1

A new method for reduction of computation and memory bandwidth for embedded large vocabulary continuous speech recognition is presented. During the Hidden Markov model state likelihood computation, scores for selected context-dependent (triphone) model states are computed for several frames in advance. Scores that are subsequently needed for Viterbi search but not found in the buffer are replaced by the scores for associated context independent (monophone) models. On the Wall Street Journal 20,000 word continuous speech recognition task, an overall reduction of 58 % memory bandwidth and decrease of 23% execution time is achieved relative to an assembly optimized implementation of Sphinx 3. Recognition accuracy is reduced by <1 % while recognition latency is increased by 30 milliseconds. Index Terms — speech recognition, acoustic modeling,

The combinatorial effect of an exponential backoff scheme and retransmission cutoff on the stability of frequency-hopping slotted ALOHA systems with finite population is investigated in terms of the catastrophe theory. In the systems, the packet retransmission probabilities are geometrically

Backoff algorithms are traditionally employed in multiple access networks, like Ethernet, to recover from packet collisions. In this paper, we propose and carry out the analysis for three types of link layer backoff schemes-linear, binary exponential, geometn'c-on point-to-point wireless

Backoff algorithms are traditionally employed in multiple access networks, like Ethernet, to recover from packet collisions. In this paper, we propose and carry out the analysis for three types of link layer backoff schemes--linear, binary exponential, geometric--on point-to-point wireless fading

Backoff algorithms are typically employed in multiple access networks (e.g., Ethernet) to recover from packet collisions. In this paper, we propose and carry out the analysis for three types of link layer backoff schemes--linear, binary exponential, geometric--on point-to-point wireless fading

, there are no quality of service guarantees. We propose a modified backoff scheme to reduce the collisions and enhance the throughput. Simulation results show that the proposed scheme is a good candidate for backoff scgeme in wireless sensor networks. Keywords- wireless sensor network; 802.15.4; Backoff