Fast-Decodable MIDO Codes With Large Coding Gain

Srinath, K. Pavan; Rajan, B. Sundar

doi:10.1109/tit.2013.2292513

Cited by 22 publications

(39 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Park et al report the asymptotic power gain of 0.5799dB with TQAM over SQAM, identical peak-to-average-power ratio for significantly large constellation size M and a significant reduction in EP with tolerable detection complexity in an AWGN channel [260]. Therefore, hexagonal QAM (HQAM) is preferred for various applications, including advanced channel coding [261], multi-antenna systems [262], multicarrier systems [263], physical-layer network coding [264], and optical communications [265]. Next step is the distribution of lattice around origin, which can be packed in square, cross, elliptical, circular, rectangular, or parallelogram envelops [247], [257], [266].…”

Section: A Asymmetric Signal Designmentioning

confidence: 99%

A Journey From Improper Gaussian Signaling to Asymmetric Signaling

Javed

Amin

Shihada

et al. 2020

IEEE Commun. Surv. Tutorials

View full text Add to dashboard Cite

The deviation of continuous and discrete complex random variables from the traditional proper and symmetric assumption to a generalized improper and asymmetric characterization (accounting correlation between a random entity and its complex conjugate), respectively, introduces new design freedom and various potential merits. As such, the theory of impropriety has vast applications in medicine, geology, acoustics, optics, image and pattern recognition, computer vision, and other numerous research fields with our main focus on the communication systems. The journey begins from the design of improper Gaussian signaling in the interference-limited communications and leads to a more elaborate and practically feasible asymmetric discrete modulation design. Such asymmetric shaping bridges the gap between theoretically and practically achievable limits with sophisticated transceiver and detection schemes in both coded/uncoded wireless/optical communication systems. Interestingly, introducing asymmetry and adjusting the transmission parameters according to some design criterion render optimal performance without affecting the bandwidth or power requirements of the systems. This dual-flavored article initially presents the tutorial base content covering the interplay of reality/complexity, propriety/impropriety and circularity/non-circularity and then surveys majority of the contributions in this enormous journey.

show abstract

Section: A Asymmetric Signal Designmentioning

confidence: 99%

A Journey From Improper Gaussian Signaling to Asymmetric Signaling

Javed

Amin

Shihada

et al. 2020

IEEE Commun. Surv. Tutorials

View full text Add to dashboard Cite

show abstract

“…More explicitly, according to the LDC representation of [236], the MIMO signals transmitted by M TAs over T symbols periods are modelled as S = Q q=1 s q A q , where a total of Q modulated symbols are dispersed by Q number of (T × M )-element dispersion matrices {A q } Q q=1 . These dispersion matrices that maximize the diversity gain may be obtained by random generation [235], [236], gradient search [235], [237], as well as divison algebra [238]- [243]. Notably, the so-called Golden code [239] as well as its generic extension termed as perfect STBC [240]- [243] are capable of always achieving a better performance than both V-BLAST and STBC, when several Receive Antennas (RAs) (N > 1) are used.…”

Section: Twenty Years Of Coheret/non-coherent Mimo Tradeoff a Gementioning

confidence: 99%

“…These dispersion matrices that maximize the diversity gain may be obtained by random generation [235], [236], gradient search [235], [237], as well as divison algebra [238]- [243]. Notably, the so-called Golden code [239] as well as its generic extension termed as perfect STBC [240]- [243] are capable of always achieving a better performance than both V-BLAST and STBC, when several Receive Antennas (RAs) (N > 1) are used. However, on one hand, the effect of IAI is encountered again, which results in the same performance/complexity tradeoffs upon employing MIMO detectors, as those shown in Fig.…”

Section: Twenty Years Of Coheret/non-coherent Mimo Tradeoff a Gementioning

confidence: 99%

“…It is worth noting that although the majority of DSTM schemes generally rely on unitary matrix design, it was demonstrated by Bhatnagar et al [267] that non-unitary MIMO schemes -including QO-STBCs [227]- [233], generic LDCs [120], [235], [236], [238], [268], [269], Golden code [239] and perfect STBCs [240]- [243]-may also be invoked by the matrix-based differential encoding operation of S n = X n−1 S n−1 in conjunction with appropriate power normalization. As a result, the full benefits of multiplexing and diversity gains of coherent MIMO schemes may also be exploited by the family of DSTM arrangements.…”

Section: B Finite-cardinality Differential Space-time Modulation (Dstm)mentioning

confidence: 99%

“…As discussed in Sec. IV-A, the family of perfect STBCs [240]- [243] including the Golden code [239] are capable of concurrently achieving both the V-BLAST's multiplexing gain and the STBC's diversity gain, hence they are superior in terms of both bandwidth-and power-efficiency over a wide range of MIMO setups. However, despite the fact that the Golden code was once included in the IEEE 802.16e-2005 WiMAX standard [296], the judicious question arises, why the perfect STBCs are not employed in mainstream wireless networks?…”

Section: Energy-efficient Index Modulation For Advanced Mimo Designmentioning

confidence: 99%

See 2 more Smart Citations

Sixty Years of Coherent Versus Non-Coherent Tradeoffs and the Road From 5G to Wireless Futures

Ishikawa

Maunder

et al. 2019

IEEE Access

View full text Add to dashboard Cite

Sixty years of coherent versus non-coherent tradeoff as well as the twenty years of coherent versus non-coherent tradeoff in Multiple-Input Multiple-Output (MIMO) systems are surveyed. Furthermore, the advantages of adaptivity are discussed. More explicitly, in order to support the diverse communication requirements of different applications in a unified platform, the 5G New Radio (NR) offers unprecendented adaptivity, abeit at the cost of a substantial amount of signalling overhead that consumes both power and the valuable spectral resources. Striking a beneficial coherent versus non-coherent tradeoff is capable of reducing the pilot overheads of channel estimation, whilst relying on low-complexity detectors, especially in high-mobility scenarios. Furthermore, since energy-efficiency is of salient importance both in the operational and future networks, following the powerful Index Modulation (IM) pholosophy, we conceive a holistic adaptive pholosophy striking the most appropriate coherent/non-coherent, single-/multiple-antenna and diversity/multiplexing tradeoffs, where the number of RF chains, the Peak-to-Average Power Ratio (PAPR) of signal transmission and the maximum amount of interference tolerated by signal detection are all taken into account. We demonstrate that this intelligent tripple-fold adaptivity offers significant benefits in next-generation applications of mmWave and Terahertz solutions, in space-air-ground integrated networks, in full-duplex techniques and in other sophisticated channel coding assisted system designs, where powerful machine learning algorithms are expected to make autonomous decisions concerning the best mode of operation with minimal human intervention.

show abstract

A new hexagonal quadrature amplitude modulation aided media‐based modulation

Aydin

2021

Int J Communication

View full text Add to dashboard Cite

Summary In this paper, a new high‐data rated and energy‐efficient hexagonal quadrature amplitude modulation aided media‐based modulation scheme, called HQAM‐MBM, is proposed for the next‐generation communication systems. In MBM, mirror activation patterns (MAPs) of a reconfigurable antenna have been used to convey extra information in addition to conventional modulated symbols. Therefore, the MBM is seen as a promising index modulation (IM) scheme for the next generation of high‐data rated communication systems. On the other hand, the HQAM constellation scheme is more energy‐efficient than traditional QAM but also has a similar performance at high signal‐to‐noise ratio (SNR) values. Hence, the HQAM technique can appear as a promising energy‐efficient scheme for 5G and beyond networking systems. From this point forth, it has been found appropriate to propose the rational HQAM‐MBM technique, which uses an energy‐efficient HQAM constellation instead of a traditional QAM constellation, and also carries additional information with the indices of the MAPs of a reconfigurable antenna. Besides, it has been shown via computer simulations that the HQAM‐MBM system has lower transmission energy than QAM‐MBM systems. Performance analysis of the HQAM‐MBM scheme is evaluated on Rayleigh fading channels.

show abstract

Fast-Decodable MIDO Codes With Large Coding Gain

Cited by 22 publications

References 33 publications

A Journey From Improper Gaussian Signaling to Asymmetric Signaling

A Journey From Improper Gaussian Signaling to Asymmetric Signaling

Sixty Years of Coherent Versus Non-Coherent Tradeoffs and the Road From 5G to Wireless Futures

A new hexagonal quadrature amplitude modulation aided media‐based modulation

Contact Info

Product

Resources

About