ABBA-VBLAST hybrid space-time code for MIMO wireless communications

Cortez, Joaquín; Bazdresch, Miguel; Torres, D.; Parra-Michel, R.

doi:10.1109/iceee.2008.4723374

Cited by 3 publications

(4 citation statements)

References 13 publications

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“…Therefore the available bandwidth cannot be enough used for every user [1]. The saving bandwidth techniques for wireless communication have been researched and already applied such as TDMA, CDMA, MIMO [2]- [4], hybrid-MIMO [5]- [7], MU-MIMO [8], etc. Fig.…”

Section: Introductionmentioning

confidence: 99%

Performance of MU-MIMO systems using HMRS technique for various transmission modes

Khomyat

Uthansakul

2013

2013 10th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technolo

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It is the fact that the bandwidth of wireless communication system is such a limited resource that several techniques are selectively applied to increase the bandwidth efficiency. The highest bandwidth efficiency can be taken by applying MU-MIMO technique. For this technique, the complexity of detection at receiving side is rapidly increased by increasing the number of users at transmitting side. Therefore the lower complex detection is necessarily required for MU-MIMO system. Recently, the simple detection technique called hybrid-MIMO receiver scheme (HMRS) has been proposed by the authors. However, that study neglected the demands of multiple users for transmitting MIMO modes (STBC or SM) which are crucially unpredictable in practice. In this paper, the performance of MU-MIMO system using HMRS technique to support various types of user transmission modes is presented. The results indicate that the HMRS technique can significantly improve the error rate for any modes of transmission.

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Section: Introductionmentioning

confidence: 99%

Performance of MU-MIMO systems using HMRS technique for various transmission modes

Khomyat

Uthansakul

2013

2013 10th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technolo

View full text Add to dashboard Cite

It is the fact that the bandwidth of wireless communication system is such a limited resource that several techniques are selectively applied to increase the bandwidth efficiency. The highest bandwidth efficiency can be taken by applying MU-MIMO technique. For this technique, the complexity of detection at receiving side is rapidly increased by increasing the number of users at transmitting side. Therefore the lower complex detection is necessarily required for MU-MIMO system. Recently, the simple detection technique called hybrid-MIMO receiver scheme (HMRS) has been proposed by the authors. However, that study neglected the demands of multiple users for transmitting MIMO modes (STBC or SM) which are crucially unpredictable in practice. In this paper, the performance of MU-MIMO system using HMRS technique to support various types of user transmission modes is presented. The results indicate that the HMRS technique can significantly improve the error rate for any modes of transmission.

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“…They take advantage of the structure of the system equation to use ordered successive interference cancellation (OSIC) decoding, which means they retain the simplicity of VBLAST. One possible approach, known as hybrid coding [3,2,7,13,8], consists in the selection of some of the available transmit antennas to work in STBC mode, while the remaining ones operate as V-BLAST. In [3], we proposed a hybrid scheme called ZF-SQRD-LQOSTBC.…”

Section: Introductionmentioning

confidence: 99%

“…One possible approach, known as hybrid coding [3,2,7,13,8], consists in the selection of some of the available transmit antennas to work in STBC mode, while the remaining ones operate as V-BLAST. In [3], we proposed a hybrid scheme called ZF-SQRD-LQOSTBC. It consists of any number of ABBA encoders of 3 of 4 antennas [11], and any number of V-BLAST antennas, and any number of ABBA encoders of 3 or 4 antennas each.…”

Section: Introductionmentioning

confidence: 99%

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

Cortez

Bazdresch

Garcia

et al. 2009

2009 Electronics, Robotics and Automotive Mechanics Conference (CERMA)

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Hybrid MIMO communication systems are defined as a combination of architectures designed to achieve both multiplexing gain (such as VBLAST), and diversity gain, (such as STBC) such that transmission schemes that have both high spectral efficiency and link reliability can be developed. In this paper we introduce a new way to represent hybrid systems, in which the detection process is carried out in a unified manner for both spatial and diversity transmitted symbols, using an OSIC algorithm, but symbol by symbol, just as single VBLAST systems performs. In this paper we present an efficient and low-complexity, ordered, successive interference cancellation receiver based on sorted QR decomposition for the hybrid STBC-VBLAST transmission scheme. We show how the use of our detection scheme proposal outperforms other recent hybrid detection schemes in terms of bit error rate, even when there is precoding at the transmitter. We also show our proposal has lower complexity, achieved by exploiting the structure of the linear dispersion matrices. 1

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“…Therefore the available bandwidth cannot be enough for every user [1]. The saving bandwidth techniques for wireless communication have been researched and already applied such as TDMA, CDMA, MIMO [2][3][4], hybrid-MIMO [5][6][7], MU-MIMO [8], etc. Fig.…”

mentioning

confidence: 99%

Performance Analysis of MU-MIMO Systems Using HMRS Technique for Various Transmission Modes

Khomyat

Uthansakul

2014

ECTI-EEC

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It is the fact that the bandwidth of wireless communication system is such a limited resource that several techniques are selectively applied to increase the bandwidth efficiency. The highest bandwidth efficiency can be taken by applying Multi-User Multiple-Input Multiple-Output (MU-MIMO) technique. For this technique, the complexity of detection is rapidly increased by increasing the number of users. Thus the lower complex detection is necessarily required for MU-MIMO system. Recently, the simple detection technique called hybrid-MIMO receiver scheme (HMRS) has been proposed by the authors. However, that study neglected the demands of multiple users for transmitting MIMO modes which are crucially unpredictable in practice. In this paper, the performance analysis of MU-MIMO system using HMRS technique to support various types of user transmission modes is presented. Moreover, the nearly exact symbol error rate (SER) analysis of HMRS with the nonlinear error propagation effect over Rayleigh channels is originally presented. The recursive procedure is adopted to derive the nearly closed-form expressions of the error probability of each user. The results indicate that HMRS technique can improve the error rate more than the existing hybrid-MIMO about 8 dB at 10e−4 SER, increasing the total number of user and number of SM user introduce the diversity gain loss. The simulation results illustrate the performance accuracy of the proposed analysis.

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ABBA-VBLAST hybrid space-time code for MIMO wireless communications

Cited by 3 publications

References 13 publications

Performance of MU-MIMO systems using HMRS technique for various transmission modes

Performance of MU-MIMO systems using HMRS technique for various transmission modes

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

Performance Analysis of MU-MIMO Systems Using HMRS Technique for Various Transmission Modes

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