Non-iterative Bit Loading Algorithm for OFDM in Independent and Correlated fading


John W. Manry, Santosh Nagaraj, Journal of Information Processing Systems Vol. 10, No. 2, pp. 163-175, Jun. 2014  

10.3745/JIPS.03.0001
Keywords: Adaptive modulation, Orthogonal Frequency Division Multiplexing (OFDM), FadingAdaptive Modulation, Orthogonal Frequency Division Multiplexing (OFDM), Fading
Fulltext:

Abstract

This paper will focus on improving the performance of orthogonal frequency division multiplexing (OFDM) in Rayleigh fading environments. The proposed technique will use a previously published method that has been shown to improve OFDM performance in independent fading, based on ordered sub-carrier selection. Then, a simple non-iterative method for finding the optimal bit-loading allocation was proposed. It was also based on ordered sub-carrier selection. We compared both of these algorithms to an optimal bit-loading solution to determine their effectiveness in a correlated fading environment. The correlated fading was simulated using the JTC channel models. Our intent was not to create an optimal solution, but to create a low complexity solution that can be used in a wireless environment in which the channel conditions change rapidly and that require a simple algorithm for fast bit loading.


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Cite this article
[APA Style]
John W. Manry and Santosh Nagaraj (2014). Non-iterative Bit Loading Algorithm for OFDM in Independent and Correlated fading. Journal of Information Processing Systems, 10(2), 163-175. DOI: 10.3745/JIPS.03.0001.

[IEEE Style]
J. W. Manry and S. Nagaraj, "Non-iterative Bit Loading Algorithm for OFDM in Independent and Correlated fading," Journal of Information Processing Systems, vol. 10, no. 2, pp. 163-175, 2014. DOI: 10.3745/JIPS.03.0001.

[ACM Style]
John W. Manry and Santosh Nagaraj. 2014. Non-iterative Bit Loading Algorithm for OFDM in Independent and Correlated fading. Journal of Information Processing Systems, 10, 2, (2014), 163-175. DOI: 10.3745/JIPS.03.0001.