We study Iterative Combining (IC) technique for hybrid Automatic Repeat reQuset (ARQ) scheme over Inter-Symbol Interference (ISI) channels. By utilizing the Extrinsic Information Transfer (EXIT) chart, we study the performance of the IC and find that the IC technique has a very good convergence behavior in the first little iteration, but it has a bad error floor, especially at the low Signal-to-Noise Ratio (SNR). In this paper, we propose a modified IC scheme to overcome the shortcoming of the traditional IC We study the receiver from another aspect in order to acquire a serial concatenation turbo-like scheme, and then we can combine the parallel (IC) and the serial concatenation turbo-like scheme together to propose a modified IC scheme. In this modified IC scheme, the EXIT chart as a balance switch between the two turbo-like schemes. It is shown that the proposed modified IC scheme provides excellent performance both analytically and through simulations without any computational complexity increase. © 2006 IEEE.
|Title of host publication||2006 International Conference on Communications, Circuits and Systems, ICCCAS, Proceedings - Communication Theory and System|
|Number of pages||5|
|Publication status||Published - 2006|
|Event||2006 International Conference on Communications, Circuits and Systems - Guilin, China|
Duration: 25 Jun 2006 → 28 Jun 2006
|Conference||2006 International Conference on Communications, Circuits and Systems|
|Period||25/06/06 → 28/06/06|