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Integrated implementation of fixed-point turbo decoders for LTE system | IEEE Conference Publication | IEEE Xplore

Integrated implementation of fixed-point turbo decoders for LTE system


Abstract:

In this paper, we discussed the fixed-point implementation of LTE turbo decoder with Max-Log-MAP algorithm. We focused on the non-uniform quantization scheme of received ...Show More

Abstract:

In this paper, we discussed the fixed-point implementation of LTE turbo decoder with Max-Log-MAP algorithm. We focused on the non-uniform quantization scheme of received information. In addition, modular arithmetic was introduced to the state metric calculation, as well as the "Scale" process to extrinsic information calculation. With small hardware implementation complexity, the resource overhead is reduced, and the working speed is improved. Furthermore, simulation results show that, using this proposed fixed-point implementation scheme, the decoding performance is much better than traditional Max-Log-MAP and closed to the Log-MAP algorithm, with a minor degradation less than 0.1 dB.
Date of Conference: 16-18 May 2013
Date Added to IEEE Xplore: 02 December 2013
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Conference Location: Chongqing, China

References

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