Space-time codes and concatenated channel codes for wireless communications

Liew, T.H.; Hanzo, Lajos

doi:10.1109/5.989869

Cited by 76 publications

(44 citation statements)

References 95 publications

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“…It is a fundamental result [145] that there are tradeoffs between these two gains-for an increased diversity gain there has to be a sacrifice in multiplexing gain. One approach to give these tradeoffs into the hand of a designer is to use space-time codes [147]- [149] which can be configured for both types of gains.…”

Section: A Fundamentals Of Spatial Diversity and Cooperative Diversitymentioning

confidence: 99%

Recent and Emerging Topics in Wireless Industrial Communications: A Selection

Willig

2008

IEEE Trans. Ind. Inf.

569

329

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Abstract-In this paper we discuss a selection of promising and interesting research areas in the design of protocols and systems for wireless industrial communications. We have selected topics that have either emerged as hot topics in the industrial communications community in the last few years (like wireless sensor networks), or which could be worthwhile research topics in the next few years (for example cooperative diversity techniques for error control, cognitive radio/opportunistic spectrum access for mitigation of external interferences).Index Terms-Cognitive radio, IEEE 802154, industrial-QoS, spatial and cooperative diversity, ultra-wideband, wireless sensor networks, ZigBee.

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Section: A Fundamentals Of Spatial Diversity and Cooperative Diversitymentioning

confidence: 99%

Recent and Emerging Topics in Wireless Industrial Communications: A Selection

Willig

2008

IEEE Trans. Ind. Inf.

569

329

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“…The RRNS-STBC introduces a new parameter for quantifying the diversity gain of the MIMO system. The RRNS-STBC scheme is a concatenated channel code [49], with M-ary modulation and STBC together acting as the inner code and RRNS being the outer code. However, in case of full diversity transmission, the code block is formed by choosing T symbols and transmitting the same T symbols across M T antennas.…”

Section: Chapter 4 Redundant Residue Number System Based Stbc Designmentioning

confidence: 99%

Redundant residue number system based space-time block codes

Sengupta

Natarajan

2014

Physical Communication

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Space-time coding (STC) schemes for Multiple Input Multiple Output (MIMO) systems have been an area of active research in the past decade. In this thesis, we propose a novel design of Space-Time Block Codes (STBCs) using Redundant Residue Number System (RRNS) codes, which are ideal for high data rate communication systems. Application of RRNS as a concatenated STC scheme to a MIMO wireless communication system is the main motivation for this work. We have optimized the link between residues and complex constellations by incorporating the "Direct Mapping" scheme, where residues are mapped directly to Gray coded constellations. Knowledge of apriori probabilities of residues is utilized to implement a probability based "Distance-Aware Direct Mapping" (DA) scheme, which uses a set-partitioning approach to map the most probable residues such that they are separated by the maximum possible distance. We have proposed an "Indirect Mapping" scheme, where we convert the residues back to bits before mapping them. We have also proposed an adaptive demapping scheme which utilizes the RRNS code structure to reduce the ML decoding complexity and improve the error performance. We quantify the upper bounds on codeword and bit error probabilities of both Systematic and Non-systematic RRNS-STBC and characterize the achievable coding and diversity gains assuming maximum likelihood decoding (MLD). Simulation results demonstrate that the DA Mapping scheme provides performance gain relative to a Gray coded direct mapping scheme. We show that Systematic RRNS-STBC codes provide superior performance compared to Nonsystematic RRNS-STBC, for the same code parameters, owing to more efficient binary to residue mapping. When compared to other concatenated STBC and Orthogonal STBC (OSTBC) schemes, the proposed system gives better performance at low SNRs.

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“…Since their invention, turbo codes have evolved at an unprecedented pace and have reached a state of maturity within just a few years due to the intensive research efforts of the turbo coding community [6]- [10]. As a result of this dramatic evolution, turbo coding has also found its way into standardized systems, such as, for example, the recently ratified third-generation (3G) mobile radio systems [11].…”

Section: Introductionmentioning

confidence: 99%

Turbo Decoding and Detection for Wireless Applications

Hanzo

Woodard²,

Robertson

2007

Proc. IEEE

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Future iterative receivers will be designed using EXIT charts for near-capacity operation over dispersive wireless channels at the lowest possible complexity and delay. More specifically, we commence by discussing the turbo principles, which have been shown to be capable of performing close to Shannon's capacity limit. We continue by reviewing the classic maximum a posteriori probability decoder. These discussions are followed by studying the effect of a range of system parameters in a systematic fashion, in order to gauge their performance ramifications. In the second part of this treatise, we focus our attention on the family of iterative receivers designed for wireless communication systems, which were partly inspired by the invention of turbo codes. More specifically, the family of iteratively detected joint coding and modulation schemes, turbo equalization, concatenated spacetime and channel coding arrangements, as well as multi-user detection and three-stage multimedia systems are highlighted.

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Space-time codes and concatenated channel codes for wireless communications

Cited by 76 publications

References 95 publications

Recent and Emerging Topics in Wireless Industrial Communications: A Selection

Recent and Emerging Topics in Wireless Industrial Communications: A Selection

Redundant residue number system based space-time block codes

Turbo Decoding and Detection for Wireless Applications

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