Non-iterative Bit Loading Algorithm for OFDM in Independent and Correlated fading
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This paper will focus on improving the performance of orthogonal frequencydivision multiplexing (OFDM) in Rayleigh fading environments. The proposed techniquewill use a previously published method that has been shown to improve OFDMperformance in independent fading, based on ordered sub-carrier selection. Then, asimple 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 thesealgorithms to an optimal bit-loading solution to determine their effectiveness in acorrelated fading environment. The correlated fading was simulated using the JTCchannel models. Our intent was not to create an optimal solution, but to create a lowcomplexity solution that can be used in a wireless environment in which the channelconditions change rapidly and that require a simple algorithm for fast bit loading.
Abstract
This paper will focus on improving the performance of orthogonal frequencydivision multiplexing (OFDM) in Rayleigh fading environments. The proposed techniquewill use a previously published method that has been shown to improve OFDMperformance in independent fading, based on ordered sub-carrier selection. Then, asimple 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 thesealgorithms to an optimal bit-loading solution to determine their effectiveness in acorrelated fading environment. The correlated fading was simulated using the JTCchannel models. Our intent was not to create an optimal solution, but to create a lowcomplexity solution that can be used in a wireless environment in which the channelconditions change rapidly and that require a simple algorithm for fast bit loading.
참고문헌 (9)
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