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Multipoint relays ”MPR” have been introduced in the proactive protocol OLSR in order to optimize the flooding overhead of control traffic. In this paper we propose an algorithm to optimize the MPR-based flooding by using network coding where MPR nodes do not simply forward packets they overhear but may send out information that is coded over the contents of(More)
This paper describes DiFCod, a protocol which is designed to reduce the number of transmissions required for flooding in wireless ad-hoc networks using network coding. We propose a simple distributed coding scheme which can be applied locally at each node. The efficiency of network coding is further enhanced by applying multiple point relays (MPR). The(More)
We consider multiple source asynchronous broadcasting problem. That is, in each broadcast, one of the nodes is the source, and the message is to be received, unaltered, by all the other nodes in the network. We propose to exploit LT code, which is one of the fountain codes, with the source independent backbone in order to reduce the number of transmissions(More)
Purpose. Port-site metastasis has been a concern with the common use of laparoscopy in urologic oncology. We conducted this study to provide a review of port-site metastases reported after the laparoscopy in managing urologic malignancies, possible contributing factors and preventative measures. Materials and Methods. An electronic search of MEDLINE using(More)
In this paper, we present a novel rateless code which outperforms LT-code, since it is adapted for network coding. To reduce the delay incurred at the intermediate nodes because of decoding and re-encoding, we design and analyze a novel degree distribution which we call Switched Distribution. This distribution increases the delivery ratio at the decoder(More)
This paper describes CDSOLT, a protocol which optimizes LT code to increase the throughput of flooding in ad hoc wireless network. We propose to apply on each hop and locally XOR operation over encoded packets in decoding process, so that more native packets could be discovered and avoid hence a break in the decoding process. Encoding also can be applied(More)
We propose a novel distributed coding scheme for broadcast over ad-hoc wireless networks. In this scheme, all nodes perform coding using a simple rateless code over the previously received, generated, or decoded symbols. Rather than waiting for a full block of encoded packets to be received before intermediate nodes could decode and resend coded packets, we(More)
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