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Performance Evaluation of Turbo Codes by Soft Detection Metrics of STBC over an IEEE 802.16e Link  

Kim, Young-Min (Chonbuk National University)
Kim, Soo-Young (Chonbuk National University)
Lim, Kwang-Jae (ETRI)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.47, no.2, 2010 , pp. 1-8 More about this Journal
Abstract
Multi antenna techniques using space-time codes can achieve diversity gains in a multi-path environment without additional bandwidth requirement. Most of the 4G candidate standards including the IEEE 802.16e adopt multi-input multi-output (MIMO) schemes to achieve either high throughput performance or diversity gains. In these 4G candidate standards, turbo codes using an iterative decoder with soft input soft output are used to overcome serious channel fading. For this reason, the estimated signal values from MIMO detectors should be soft decision detection values. In this paper, we propose efficient methods to estimate soft decision detection values for various space time coding schemes, and provide the simulation results of turbo coded space time coding scheme over an IEEE 802.16e link.
Keywords
space-time block coding; transmit diversity; WiMax; soft decision;
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