Recently, broadband analog network coding (ANC) has intensively been studied due to its potential to increase the network capacity by exploiting the broadcasting nature of the wireless channel. However, channel state information (CSI) knowledge is required for self-information removal and signal detection. A low-complexity pilot-assisted channel estimation (PACE) scheme has been presented for b...

In this paper, we study the performance of simple wireless multiple-access communication systems, where two correlated sources communicate to an access point (AP) directly or, possibly, by using a relay node. In particular: if no relay is used, then the two sources make use of channel coding; if the relay is used, then the two sources transmit uncoded information and the relay adds redundancy (...

In this paper, we show that the capacity of the threenode Gaussian relay channel can be achieved to within 1 and 2 bit/sec/Hz using compress-and-forward and amplify-and-forward relaying, respectively.

Sharing a multiantenna relay among several sectors is a simple and cost-effective way to achieving much of the gains of local interference mitigation in cellular networks. Next generation wireless systems, such as ones based on the Third Generation Partnership Projects Long-Term Evolution Advanced, will employ universal frequency reuse to simplify network deployment. This strategy is anticipate...

This paper focuses on Byzantine attack detection for Gaussian two-hop one-way relay network, where an amplify-and-forward relay may perform Byzantine attacks by forwarding altered symbols to the destination. For facilitating attack detection, we utilize the openness of wireless medium to make the destination observe some secured signals that are not attacked. Then, a detection scheme is develop...

Molecular communication is a novel paradigm that uses molecules as an information carrier to enable nanomachines to communicate with each other. Interconnections of the nanomachines with molecular communication is envisioned as a nanonetwork. Nanonetworks are expected to enable nanomechines to cooperatively share information such as odor, flavour, light, or any chemical state. In this paper, we...

Title of dissertation: BEAMFORMING ALGORITHMS FOR INFORMATION RELAYING IN DENSE WIRELESS NETWORKS Mohamed Abdallah, Doctor of Philosophy, 2006 Dissertation directed by: Assistant Professor Haralabos C. Papadopoulos Department of Electrical and Computer Engineering In this dissertation we develop a class of bandwidth-efficient algorithms for information relaying in large-scale wireless ad-hoc ne...

Reliable transmission of a discrete memoryless source over a multiple-relay relay-broadcast network is considered. Motivated by sensor network applications, it is assumed that the relays and the destinations all have access to side information correlated with the underlying source signal. Joint source-channel cooperative transmission is studied in which the relays help the transmission of the s...

This paper discusses two coding approaches for a network of half-duplex relay terminals and presents achievable rates for the discrete memoryless relay channel. Both proposals gain on an implicit (in case of compress-and-forward) or explicit (in case of decode-and-forward) inter-relay cooperation.

We study the two-user MIMO block fading twoway relay channel in the non-coherent setting, where neither the terminals nor the relay have transmit or receive knowledge of the channel realizations. We present a lower bound on the achievable sum-rate with decode-and-forward (DF) at the relay node. As a byproduct we present an achievable pre-log region of the DF scheme, defined as the limiting rati...