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- W2083396359 abstract "The authors propose a square-QAM adaptive modulation/time division multiple access/time division duplex (TDMA/TDD) system for land mobile communications to achieve high quality and high bit rate transmission in both flat and frequency selective fading environments. To further improve performance, a new modulation level estimation scheme using the Walsh function and maximum likelihood (MS) estimation is also proposed. Computer simulation confirms that the proposed system gives 8 dB better performance and four times larger delay spread immunity than that of conventional QPSK systems at BER = 10-3." @default.
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- W2083396359 date "1995-02-02" @default.
- W2083396359 modified "2023-09-26" @default.
- W2083396359 title "Square-QAM adaptive modulation/TDMA/TDD systems using modulation level estimation with Walsh function" @default.
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- W2083396359 doi "https://doi.org/10.1049/el:19950129" @default.
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