It has been proposed recently to replace the cyclic prefix (CP) in OFDM transmission by zero-padding (ZP); this guarantees symbol recovery even when channel s are located on a subcarrier. This, though, has the disadvantage that the simple DFT-based receiver does not perform well, but ...
When the channel delay spread is larger than the guard interval of zero-padded (ZP) OFDM transmissions, interblock interference (IBI) might lead to significant performance degradation. Without altering the signal design, a time-domain equalizer (TEQ) can be applied at the receiver to shorten the...
In this work, we propose a new blind channel estimator based on correlation-matching techniques for zero padded OFDM systems. The correlation matching approach consists in matching the observation covariance matrix, which is parameterized by the unknown channel vector, with its estimates based on the...
发生了错误!麻烦反馈至contact@cnblogs.com 评论框加载失败,请与管理员联系(contact@cnblogs.com)。
3.The method of claim 2, wherein the OFDM symbol is an IFFT of a padded with NGzeros, the IFFT being the inverse fourier transform of the FFT of the channel H. 4.The method of claim 2, further comprising the step of:as a first step, providing a library (304.1) of at least one...
A GI consisting of all zeros is also known, and the technique is referred to as Zero Padding (ZP–OFDM). ZP–OFDM performs very well, but suffers from a complexity problem. This paper provides two improved and low-complexity receiver designs for ZP–OFDM, which make the convolutions ...
We derive a block linear MMSE equalizer suitable for zero padded multicarrier systems with insufficient guard length. The proposed equalizer is not limited to systems using the IFFT/FFT pair (like in DMT or OFDM), but to any multicarrier system that can be modelled as a pair of perfect reco...
Employing the zero forcing (ZF) equalizer, zero-padded orthogonal frequency-division multiplexing (ZP-OFDM) is capable of benefiting the maximum available multipath diversity with the computational complexity of inverting a matrix of the size of data block length, which incurs an extra implementation ...
Homa Eghbali and Sami Muhaidat, "A new reduced- complexity detection scheme for zero-padded OFDM transmissions", EURASIP Journal on Wireless Communications and Networking, 2011.Eghbali and Sami Muhaidat, "A new reducedcomplexity detection scheme for zero-padded OFDM transmissions - Homa - 2011 ()...
This paper introduces a type of OFDM-CDMA system that pads OFDM symbols with zeros. We term it ZP-OFDM/CDMA, Like CP-OFDM/CDMA that uses cyclic prefixes, ZP-OFDM/CDMA also enables efficient frequency domain equalization of severe multipath channels. In this paper, we first present the ...