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

John W. Manry and Santosh Nagaraj
Volume: 10, No: 2, Page: 163 ~ 175, Year: 2014
10.3745/JIPS.03.0001
Keywords: Adaptive Modulation, Orthogonal Frequency Division Multiplexing (OFDM), FadingAdaptive Modulation, Orthogonal Frequency Division Multiplexing (OFDM), Fading
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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
IEEE Style
John W. Manry and Santosh 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, "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.