Joint Time-Frequency Diversity for Single-Carrier Block Transmission in Frequency Selective Channels
نویسندگان
چکیده
منابع مشابه
Joint Time-Frequency Diversity for Single-Carrier Block Transmission in Frequency Selective Channels
In time-varying frequency selective channels, to obtain high-rate joint time-frequency diversity, linear dispersion coded orthogonal frequency division multiplexing (LDC-OFDM), has recently been proposed. Compared with OFDM systems, single-carrier systems may retain the advantages of lower PAPR and lower sensitivity to carrier frequency offset (CFO) effects, which motivates this paper to invest...
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In this paper we propose a new space diversity scheme for broadband PLC systems using orthogonal space-time block coding (OSTBC) transmission combined with single-carrier frequency-domain equalization (SC-FDE). To apply this diversity technique to PLC channels, we first propose a new technique for combining SC-FDE with OSTBCs applicable to all dispersive multipath channels impaired by impulsive...
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が大きく劣化してしまうという問題がある. そこで本稿では,この問題を解決するために,TDD-SC-SFBC ダイバーシチのためのマルチサブキャリア FDE (MS-FDE)を提案する.提案法では,最小平均二乗誤差(MMSE)規範に基づき,1 符号語内のチャネルの周波数 変動を考慮して複数のサブキャリアの FDE 重みを同時に最適化することで,SFBC 符号の直交性の崩れに起因する 干渉を抑圧する.提案 MS-FDE を用いる TDD-SC-SFBC ダイバーシチを行った場合の平均 BER 特性を計算機シミュ レーションにより求め,MS-FDE は 1 符号語内でチャネルが周波数変動しないものと仮定して最適化された従来 FDE より常に優れた平均 BER 特性を達成できることを明らかにしている.また MB-FDE を用いる TDD-SC-STBC ダイバーシチとの特性比較を行い,TDD...
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One-tap frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion can significantly improve the bit error rate (BER) performance of single-carrier (SC) transmission in a frequency-selective fading channel. However, a big performance gap from the theoretical lower bound still exists due to the presence of residual inter-symbol interference (ISI) after MMSE-FDE. ...
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ژورنال
عنوان ژورنال: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
سال: 2012
ISSN: 0916-8508,1745-1337
DOI: 10.1587/transfun.e95.a.1912