title : Novel Relay Protocol Using AMC Based Throughput Optimization in LTE- Advanced System 
authors : Saransh Malik, Sangmi Moon, Bora Kim ,Huaping Liu, Cheolwoo You, Jeong-Ho KIM, Intae Hwang 
this_paper_appears_in : IEICE TRANSACTIONS ON COMMUNICATIONS 
issue_date : December 2013 
volume : Vol. E96-A, No.12 
on_pages : 2735-2739 
issn :  
abstract : In this letter, we propose an Adaptive Modulation and Coding (AMC) scheme using relay protocols Amplify-and-Forward (AF), Decode-and-Forward (DF) and De-Modulate-and-Forward (DMF). AMC is used for improving the throughput and reliability of a communication system, using different modulation and coding schemes. We analyze the performance of relay protocols with the AMC scheme and observe that relay protocols with the AMC scheme show better average throughput at a lower Signal to Noise Ratio (SNR) level. We perform simulations based on 3GPP Long Term Evolution-Advanced (LTE-A) parameters to prove the performance comparison of adaptive Modulation and Coding Scheme (MCS) relay protocols with non-adaptive MCS relay protocols. The simulation results of the proposed DMF protocol performs best, at a lower SNR value and higher average throughput. 
keywords : AF, DF, DMF, AMC, MCS, LTE-A 
number : 23 

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