AbstructThis paper presents an adaptive error control (AEC) scheme for multimedia applications in integrated terrestrial-satellite wireless networks. The AEC protocol supports both real-time and non-real-time applications. In the AEC protocol, we propose new adaptive FEC (AFEC) and hybrid ARQ (HARQ) schemes for real-time and non-real-time traffic, respectively. Throughput performance for non-re...

The character of Parallel Concatenated LDPC codes with rate-compatible is analyzed. An Incremental redundancy hybrid ARQ scheme based on parallel concatenated LDPC codes is introduced. We studied the throughput of the new HARQ scheme and obtained the closed_form solutions. Furthermore, the throughput of the new HARQ scheme is simulated. It shows that for arbitrary block fading channel, comprisi...

We design and implement a network-coding-enabled reliability architecture for next generation wireless networks. Our network coding (NC) architecture uses a flexible thread-based design, with each encoder-decoder instance applying systematic intra-session random linear network coding as a packet erasure code at the IP layer, to ensure the fast and reliable transfer of information between wirele...

This paper investigates the issue of labeling design in the BICM-ID (bitinterleaved coded modulation-iterative decoding) systems with Type-I HARQ (hybrid auto-retransmission request). Based on the EXIT (extrinsic information transfer) chart, an algorithm is developed in search of good labelings that well match with the outer code. The concept of link adaptation is realized by using different la...

The objective of our paper is to improve efficiency (in terms of throughput or system capacity) for mobile satellite communications. In this context, we propose an enhanced Hybrid Automatic Repeat reQuest (HARQ) for delay tolerant services. Our proposal uses the estimation of the mutual information. We evaluate the performance of the proposed method for a land mobile satellite channel by means ...

Type-II Hybrid-ARQ (Type-II HARQ) has been shown, under certain circumstances, to increase the efficiency and reduce packet loss of data transmissions over a wireless channel. We present a model for evaluating the performance of packet transmissions over a wireless link employing Type-II HARQ error mitigation. Considering a channel subject to correlated bit errors, numerical results for a wide ...

Automatic repeat request (ARQ) schemes, and in particular hybrid-ARQ (HARQ) which jointly adopt forward error correction (FEC) ARQ, are essential to provide reliable data transmission wireless communications systems. However, the feedback from receiver transmitter retransmission process used ARQ incurs significant cost terms of power efficiency, throughput, computational delay. Unfortunately, s...

| This paper presents an adaptive error control (AEC) scheme for multimedia applications in integrated terrestrial-satellite wireless networks. The AEC protocol supports both real-time and non-real-time applications. In the AEC protocol, we propose new adaptive FEC (AFEC) and hybrid ARQ (HARQ) schemes for real-time and non-real-time traac, respectively. Throughput performance for non-real-time ...

We develop a coordinated hybrid automatic repeat request (HARQ) approach. With the proposed scheme, if a user message is correctly decoded in the first HARQ rounds, its spectrum is allocated to other users, to improve the network outage probability and the users’ fairness. The results, which are obtained for singleand multiple-antenna setups, demonstrate the efficiency of the proposed approach ...