An Efficient Detector for STBC-VBLAST Space-Time Code for MIMO Wireless Communications

Cortez, Joaquín; Bazdresch, Miguel; Garcia, Armando; Campoy, Jose M.; Pizarro, Andres

doi:10.1109/cerma.2009.71

Cited by 5 publications

(4 citation statements)

References 15 publications

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“…In ref. [29], an efficient encoder/decoder scheme was proposed, it sends the symbols in the first time slot and the negative conjugate of the symbols in the second time slot but the STBC encoder layers sent symbols as defined in Alamouti scheme (G2). The transmitted symbols can be formulated in a matrix form as: (18) where x spa is BLAST layers transmitted symbols.…”

Section: Hybrid Of Blast and Stbc Systemsmentioning

confidence: 99%

Adaptive Switching Hybrid Blast-STBC MIMO System

Salemdeeb

Abu‐Hudrouss

2021

JERR

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Fading in a wireless channel has negative effects on the performance of communication systems. Bell Laboratories layered space-time (BLAST) has been used to get a high data rate while space-time block codes (STBC) have been used to get a low bit error rate (BER) performance. Under deep faded channels, hybrid BLAST-STBC systems are considered as a trade-off between BLAST and STBC systems. By exploiting the benefits of both systems, a new method to represent a 4 × 4 multiple-input and multiple-output (MIMO) system is proposed and studied, in which the transmission process is carried out adaptively between both 4 × 4 VBLAST, Quasi-Orthogonal STBC (QOSTBC) and Hybrid systems according to the transmit links state. The proposed adaptive switching hybrid system (ASHS) reduces the total transmitted power, achieves the maximum throughput by obtaining the best BER. An adaptive switching transmission scheme using the strategy of measuring the transmit links fading is investigated as well. The simulated results are obtained in an environment of a 4 × 4 MIMO system using MATLAB platform where the total transmitting power is normalized to unity. The detections are done using the maximum likelihood (ML) receiver. The proposed ASHS system shows a lot of advantages such as maximum throughput is obtained in bad channel states, no additional transmit power is needed and no additional bandwidth is needed. Finally, under deep fading condition, the proposed ASHS transmission scheme obtains the best BER, reduces wasting the total transmitted power, achieves the maximum throughput and obtains the best BER.

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Section: Hybrid Of Blast and Stbc Systemsmentioning

confidence: 99%

Adaptive Switching Hybrid Blast-STBC MIMO System

Salemdeeb

Abu‐Hudrouss

2021

JERR

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“…A hybrid model is a combination of SM and STBC [5][6][7]. A Hybrid MIMO-OFDM system is as shown in Fig.2.…”

Section: Hybrid Mimo-ofdm Technologymentioning

confidence: 99%

“…The combination of Spatial Multiplexing (SM) and STBC improves multiplexing gain and diversity gain simultaneously. MIMO techniques presented by [5][6][7] give good results for flat fading channel.…”

Section: Introductionmentioning

confidence: 96%

Performance of Spatial Multiplexing, Diversity and Combined Technique for MIMO-OFDM System

Chaudhary¹,

Patil²

2014

IJMNCT

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In this paper, Space Time Block Code (STBC), Spatial Multiplexing (SM) and hybrid model with OFDM are designed for Rayleigh fading channel. Combination of SM and STBC forms hybrid MIMO model. The performances of the above mentioned models with different modulations such as Quadrature Phase Shift Keying (QPSK) and Quadrature Amplitude Modulation (QAM) with multiple antennas are measured with respect to BER. In this paper, it is shown that Hybrid MIMO provides low BER. Thus, in wireless communication, hybrid model improves the data rate and link reliability.

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“…A combined STBC-VBLAST scheme was first proposed by Tianyu Mao and Mehul Motani [8]. Another combination of VBLAST and STBC was proposed in [9,10] called a Multi-Layered STBC (MLSTBC) system to provide both diversity and multiplexing gain.…”

Section: Introductionmentioning

confidence: 99%

Performance of relay assisted uplink wireless communication using multi-layered STBC for multiple access channel

Kamruzzaman

Peng

2018

Telecommun Syst

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In this paper, we propose a relay assisted multiuser Multiple-input multiple-output wireless communication using multilayer space time block coding in the presence of Rayleigh fading. Bit error rate, capacity, diversity and multiplexing gain are investigated for the proposed scheme. Information of each user is modulated using QPSK or 16QAM or 64QAM modulator and modulated data are further encoded using Space Time Block Coding and then split into n streams which are simultaneously transmitted through n transmit antennas of each user. MLSTBC is used to re-encode the data at relay because it provides both diversity and multiplexing gain and it is possible to deploy a large number of antennas at relay by using MLSTBC to improve the capacity of the second hop. The capacity of the whole system also increases for using large number of antennas at relay with acceptable BER. Simulation and analytical results are presented to show the performance of the proposed system. KeywordsMultiuser • STBC • MLSTBC • MIMO • Relay Part of the results of this paper was presented at the Wireless and Optical Communication Conference (WOCC), 2015 24th, Taipei [43].

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An Efficient Detector for STBC-VBLAST Space-Time Code for MIMO Wireless Communications

Cited by 5 publications

References 15 publications

Adaptive Switching Hybrid Blast-STBC MIMO System

Adaptive Switching Hybrid Blast-STBC MIMO System

Performance of Spatial Multiplexing, Diversity and Combined Technique for MIMO-OFDM System

Performance of relay assisted uplink wireless communication using multi-layered STBC for multiple access channel

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