Cooperative Multi-Sender Index Coding
نویسندگان
چکیده
منابع مشابه
Cooperative Multi-Sender Index Coding
In this paper, we establish new capacity bounds for the multi-sender unicast index-coding problem. We first revisit existing outer and inner bounds proposed by Sadeghi et al. and identify their suboptimality in general. We then propose a new multi-sender maximal-acyclic-induced-subgraph outer bound that improves upon the existing bound in two aspects. For inner bound, we identify shortcomings o...
متن کاملStructural Characteristics of Two-Sender Index Coding
This paper studies index coding with two senders. In this setup, source messages are distributed among the senders (possibly with overlapping of messages). In addition, there are multiple receivers, where each receiver having some messages a priori, known as side-information, is requesting one unique message such that each message is requested by only one receiver. Index coding in this setup is...
متن کاملDiversity and Coding Gain of Multi-Source Multi-Relay Cooperative Wireless Networks with Binary Network Coding
In this paper, a multi–source multi–relay cooperative wireless network with binary network coding is studied. The system model encompasses: i) a demodulate–and–forward protocol at the relays, where the received packets are forwarded regardless of their reliability; and ii) a maximum–likelihood optimum decoder at the destination, which accounts for possible decoding errors at the relays. An asym...
متن کاملCombining cooperative diversity and network coding in uplink multi-source multi-relay networks
In this paper, a new scheme of combining cooperative diversity with network coding is proposed for wireless uplink multi-source multi-relay networks. The existing network-coded cooperative scheme always conducts network coding operation at relays in moderate-to-high signal-to-noise ratio region. Distinct from it, the proposed scheme determines either a direct cooperative mode or a network-coded...
متن کاملCooperative Lattice Coding and Decoding
We propose novel lattice coding/decoding schemes for halfduplex outage-limited cooperative channels. These schemes are inspired by the cooperation protocols of Azarian et al. and enjoy an excellent performance-complexity tradeoff. More specifically, for the relay channel, we devise a novel variant of the dynamic decode and forward protocol, along with a lattice-coded implementation, which enjoy...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Information Theory
سال: 2019
ISSN: 0018-9448,1557-9654
DOI: 10.1109/tit.2018.2869161