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Most studies on hybrid automatic repeat request (HARQ) with respect to rate adaptation have been focused on throughput maximization. However, for real-time traffic, resource minimization is a more efficient rate adaptation method in OFDMA-based systems. Moreover, most previous work have dealt with either slow or fast fading channel although practical wireless channels typically exhibit a time-correlated...
In order to reduce MAP overhead for periodic small-sized services such as voice over IP (VoIP) service, a persistent scheduling scheme has been proposed in IEEE 802.16e/m. Although this persistent scheduling scheme is designed for periodic services, we propose to adopt the persistent scheduling for non-periodic real-time services with small-sized packets by considering the advantage of MAP overhead...
The Embedded Systems are now in use more commonly in our daily lives. They can accomplish many complicated tasks in different working environments, and concurrency and synchronization are ordinary problems the embedded software usually must be confronted with. This issue presents a novel method for controlling such problems efficiently. To avoid the inefficiency or collision induced by directly coupling...
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