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In this paper, a new distributed LDPC coder is developed in the cooperative relay networks. Although the proposed scheme requires to use the same bandwidth as the conventional approach over OFDM based transmission, the use of the hybrid ARQ can be reduced. In addition, the overall performance can be improved using the proposed approach.
This paper proposes a spectrum resource reduction method using a hybrid ARQ for OFDM cellular system by relaying the required data with error from the relay station. In this system, we consider a direct communication from a base station to a mobile station using OFDM cellular system like WiMAX and a relayed network from the relay station to the mobile station using highly reliable short range network...
In wireless communication systems, intended to support broadcast services, it is not feasible to use an error control strategy such as automatic repeat request (ARQ) due to the heavy channel and transmitter load caused by all repeat-requests. An alternative error correcting strategy not suffering from the disadvantages of using ARQ is the introduction of a forward error correcting (FEC) code. In this...
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