Intelligent Reflecting Surface Versus Decode-and-Forward: How Large Surfaces are Needed to Beat Relaying?

Performance Analysis of cooperative SWIPT System: Intelligent Reflecting Surface versus Decode-and-Forward

In this paper, we explore the impacts of utilizing intelligent reflecting surfaces (IRS) in a power-splitting based simultaneous wireless information and power transfer (PS-SWIPT) system and compare its performance with the traditional decode and forward relaying system. To analyze a more practical system, it is also assumed that the receiving nodes are subject to decoding cost, and they are on...

Are Amplify-and-Forward Relaying and Decode-and-Forward Relaying the Same?

Amplify-and-Forward Versus Decode-and-Forward Relaying: Which is Better?

Performance of multi-hop MIMO relay channels under the amplify-and-forward and decode-and-forward protocols are compared via the capacity and SNR gains. In an N hop channel of linear topology with multi-antenna source and destination and single-antenna relay nodes, the capacity gain of the DF relaying over the AF one does not exceed log2N bit/s/Hz and its SNR gain does not exceed N , for any ch...

Decode-and-forward relaying based on orthogonal complementary codes

In this note, we propose a full-duplex decode-and-forward cooperative diversity scheme based on code division with orthogonal complementary codes. We consider a simple case in which a single user is assisted by a single relay to achieve cooperative diversity. When the cooperation is full-duplex, the operational delay of the relay makes the channel asynchronous and this may cause multiple-access...

Rate, Reliability, and Delay Tradeoffs for Decode-and-Forward Relaying

We extend the random coding error exponent to three common decode-and-forward schemes for the relay channel. The resulting bounds give achievable tradeoffs among rate, reliability, and delay, allowing comparison of decode-and-forward with direct transmission and other schemes in broader terms than asymptotic achievable rates alone. In contrast to the asymptotic case in which the achievable rate...