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- W1608652803 abstract "We investigate the performance of frequency-hopped OFDMA (FH-OFDMA), where subcarriers are assigned to users according to predetermined hopping patterns. Some of the patterns carry pilot symbols, which the users track to estimate their channel and perform coherent detection. We develop a simple theoretical framework in order to evaluate the bit error probability (BEP) over each data pattern, when trellis-coded modulation (TCM) is employed for error protection. Our analytical results illustrate that appropriately constructing the patterns, given the channel parameters, can have a significant effect on the performance experienced by different users of this OFDMA system. An intuitively pleasing trade-off between channel estimation quality and performance enhancement due to frequency diversity is also revealed, as the channel becomes more frequency selective" @default.
- W1608652803 created "2016-06-24" @default.
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- W1608652803 date "2006-08-03" @default.
- W1608652803 modified "2023-09-26" @default.
- W1608652803 title "A Performance Analysis of Coded Frequency - Hopped OFDMA with Pilot-Assisted Channel Estimation" @default.
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- W1608652803 doi "https://doi.org/10.1109/pimrc.2005.1651459" @default.
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