Fixed-point Implementation for Downlink Traffic Channel of IEEE 802.16e OFDMA TDD System 


Vol. 31,  No. 6, pp. 593-602, Jun.  2006


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  Abstract

This paper propose to methodology for deciding suitable bit size that minimizes hardware complexity and performance degradation from floating-point design the fixed-point implementation of downlink traffic channel of IEEE 802.16e OFDMA TDD system. One of the major considering issues for implementing fixed-point design is to select Saturation or Quantization properly with the knowledge of signal distribution by pdf or histogram. Also, through trial and error, we should execute exhaustive computer simulation for various bit sizes, hence obtain appropriate bit size while minimizing performance degradation. We carry out computer simulation to decide the optimized bit size of downlink traffic channel under AWGN and ITU-R M.1225 Veh-A channel model.

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  Cite this article

[IEEE Style]

K. Kim, T. Sun, Y. Wang, K. Chang, H. Park, I. Eo, "Fixed-point Implementation for Downlink Traffic Channel of IEEE 802.16e OFDMA TDD System," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 6, pp. 593-602, 2006. DOI: .

[ACM Style]

KyooHyun Kim, TaeHyung Sun, YuPeng Wang, KyungHi Chang, HyungIl Park, and IkSoo Eo. 2006. Fixed-point Implementation for Downlink Traffic Channel of IEEE 802.16e OFDMA TDD System. The Journal of Korean Institute of Communications and Information Sciences, 31, 6, (2006), 593-602. DOI: .

[KICS Style]

KyooHyun Kim, TaeHyung Sun, YuPeng Wang, KyungHi Chang, HyungIl Park, IkSoo Eo, "Fixed-point Implementation for Downlink Traffic Channel of IEEE 802.16e OFDMA TDD System," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 6, pp. 593-602, 6. 2006.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880