Perfect discrete multitone modulation with optimal transceivers

Lin, Yuan-Pei; Phoong, See-May

doi:10.1109/78.845928

Cited by 47 publications

(12 citation statements)

References 13 publications

(25 reference statements)

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“…Lin and Phoong [39,40,44] showed that the amount of redundancy (guard samples) K N − M ∈ N required to eliminate IBI and ISI in memoryless block-based transceivers must satisfy the inequality 2K ≥ L. They proposed a family of memoryless discrete multitone transceivers with reduced redundancy. A particular transceiver of interest to our studies here is the zero-padding zerojamming (ZP-ZJ) system, which is characterized by the following transmitter and receiver matrices:…”

Section: Zp-zj Transceiversmentioning

confidence: 99%

Block Transceivers: OFDM and Beyond

Diniz

Martins

Lima

2012

Synthesis Lectures on Communications

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The demand for data traffic over mobile communication networks has substantially increased during the last decade. As a result, these mobile broadband devices spend the available spectrum fiercely, requiring the search for new technologies. In transmissions where the channel presents a frequencyselective behavior, multicarrier modulation (MCM) schemes have proven to be more efficient, in terms of spectral usage, than conventional modulations and spread spectrum techniques.The orthogonal frequency-division multiplexing (OFDM) is the most popular MCM method, since it not only increases spectral efficiency but also yields simple transceivers. All OFDM-based systems, including the single-carrier with frequency-division equalization (SC-FD), transmit redundancy in order to cope with the problem of interference among symbols. This book presents OFDM-inspired systems that are able to, at most, halve the amount of redundancy used by OFDM systems while keeping the computational complexity comparable. Such systems, herein called memoryless linear time-invariant (LTI) transceivers with reduced redundancy, require low-complexity arithmetical operations and fast algorithms. In addition, whenever the block transmitter and receiver have memory and/or are linear time-varying (LTV), it is possible to reduce the redundancy in the transmission even further, as also discussed in this book. For the transceivers with memory it is possible to eliminate the redundancy at the cost of making the channel equalization more difficult. Moreover, when time-varying block transceivers are also employed, then the amount of redundancy can be as low as a single symbol per block, regardless of the size of the channel memory.With the techniques presented in the book it is possible to address what lies beyond the use of OFDM-related solutions in broadband transmissions.

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Section: Zp-zj Transceiversmentioning

confidence: 99%

Block Transceivers: OFDM and Beyond

Diniz

Martins

Lima

2012

Synthesis Lectures on Communications

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“…This can be lead to substantial leakage of power between sub-channels and consequently induce inter-channel interference. An efficient discrete wavelet multi-tone was proposed by Sandberg and Tzannes [9] in order to improve sub-channel separation, in which perfect reconstruction filter banks are used as transceivers [10]. When the analysis and synthesis banks of perfect reconstruction filter bank are interchanged, the new structure becomes a transmultiplexer.…”

Section: Wavelet Packet Modulation Based Ofdmmentioning

confidence: 99%

Wavelet Packet Modulation for Multi-carrier CDMA Communications

Hassouna

Badran

Mohamed

et al. 2007

2007 National Radio Science Conference

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MC-CDMA inherits the interference rejection capability of CDMA, and the potential of mitigating multipath propagation effects of orthogonal frequency division multiplexing (OFDM). MC-CDMA with its frequency diversity is an attractive modulation scheme for multi-user high data rate wireless communication system. However on OFDM and MC-CDMA sub-channel decomposition cannot be achieved without adding guard band or cyclic prefix, where a copy of the end part of the data symbol block is transmitted. Due to the relationship between circular and linear convolutions in discrete Fourier transform (DFT), the residual inter symbol interference (ISI) is eliminated by dropping the guard interval part in the receiver. This method needs transmitting extra guard interval signals that introduces overhead and thus leads to spectral inefficiency and performance degradation. An efficient scheme which not only counters the degrading effects of ISI but also conserves the bandwidth is the application of discrete wavelet packet transform (DWPT) based MC-CDMA. In this paper we replace Fourier based complex exponential carriers of MC-CDMA with an orthonormal wavelets packets, such as daubechies, haar, biorthogonal, discrete meyer and coiflets to compare the performance of MC-CDMA based discrete fourier transform (DFT) and MC-CDMA based discrete wavelet packet transform(DWPT).

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“…Subsequently, Lin et al proposed a method [27] based on a given and the zeros of the channel, in which the minimum redundancy for the existence of the nonblock-based transceiver can be determined exactly. In [11] and [27], it was demonstrated that the minimum redundancy for a block-based transceiver is given by , where denotes the ceiling integer. For such block-based transceivers employing redundancy TZ of , the channel matrix for the PR test differed from the matrix used in [2].…”

Section: Introductionmentioning

confidence: 99%

“…Their results closely corresponded to the convex optimization framework developed by Palomar et al in [25] under the ZF constraint. Rather than the ZF constraint, designs with other criteria are addressed in [2], [11], [20], [37]- [39]. Again, the aforementioned works considered a block-based precoder with sufficient redundancy.…”

Section: Introductionmentioning

confidence: 99%

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Minimum BER Block-Based Precoder Design for Zero-Forcing Equalization: An Oblique Projection Framework

Chern

2007

IEEE Trans. Signal Process.

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This work devises a minimum bit error rate (BER) block-based precoder used in block transmission systems with the proposed cascaded zero-forcing (ZF) equalizer. The study framework is developed as follows. For a block-based precoder, a received signal model is formulated for the two redundancy schemes, viz., trailing-zeros (TZ) and cyclic-prefix (CP). By exploiting the property of oblique projection, a cascaded equalizer for block transmission systems is proposed and implemented with a scheme, in which the inter-block interference (IBI) is completely eliminated by the oblique projection and followed by a matrix degree-of-freedom for inter-symbol interference (ISI) equalization.With the available channel state information at the transmitter side, the matrix for ISI equalization of the cascaded equalizer is utilized to design an optimum block-based precoder, such that the BER is minimized, subject to the ISI-free and the transmission power constraints. Accordingly, the cascaded equalizer with the ISI-free constraint yields a cascaded ZF equalizer. Theoretical derivations and simulation results confirm that the proposed framework not only retains identical BER performance to previous works for cases with sufficient redundancy, but also allows their results to be extended to the cases of insufficient redundancy.

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Perfect discrete multitone modulation with optimal transceivers

Cited by 47 publications

References 13 publications

Block Transceivers: OFDM and Beyond

Block Transceivers: OFDM and Beyond

Wavelet Packet Modulation for Multi-carrier CDMA Communications

Minimum BER Block-Based Precoder Design for Zero-Forcing Equalization: An Oblique Projection Framework

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