Partial ML Detection for Frequency-Asynchronous Distributed Alamouti-Coded (FADAC) OFDM
نویسندگان
چکیده
منابع مشابه
Alamouti-Based Space-Frequency Coding for OFDM
We investigate space-frequency block coding for OFDM systems with multiple transmit antennas, where coding is applied in the frequency domain (OFDM carriers) rather than in the time domain (OFDM symbols). In particular we consider Alamouti’s code, which was shown to be the optimum block code for two transmit antennas and time domain coding. We show that the standard decoding algorithm results i...
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Abslmct-In Alamouti coded O F D M systems, the simple decoding at the receiver relies on the assumption that the subchannels are flat fading, decoupled, and quasi-static so that each subchannel does not change over an Alamouti codeword period (two consecutive OFDM symbol periods). When the channel is fast fading, however, these assumptions are not met, resulting in severe performance degradatio...
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When the Alamouti code is applied (as a space-time block code) to an OFDM system with transmit diversity, the simple Alamouti decoding requires that each subchannel is flatfading and constant over two symbol periods(Alamouti codeword period). The second requirement makes the Alamouti decoding scheme not suitable for time varying channels. In this paper, we propose a new decision directed receiv...
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ژورنال
عنوان ژورنال: Wireless Communications and Mobile Computing
سال: 2019
ISSN: 1530-8669,1530-8677
DOI: 10.1155/2019/4319802