Minimum Variance Linear Receivers for Multiaccess MIMO Wireless Systems with Space-Time Block Coding

Shahbazpanahi, Shahram; Beheshti, Mojtaba; Gershman, A.B.; Gharavi-Alkhansari, M.; Wong, K.M.

doi:10.1109/tsp.2004.837442

Cited by 69 publications

(104 citation statements)

References 16 publications

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“…Several linear receiver techniques have been recently developed for space-time coded multiaccess MIMO systems [5]- [8]. For example, a minimum variance (MV) linear receiver has been developed in [5] for direct sequence (DS) code-division multiaccess (CDMA) systems that use multiple antennas and spacetime block coding.…”

Section: Introductionmentioning

confidence: 99%

“…A more general class of MV linear receivers have been recently proposed in [8]. In contrast to [5]- [7], the techniques of [8] are applicable to the general case of arbitrary OSTBCs and multiple interferers.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast to [5]- [7], the techniques of [8] are applicable to the general case of arbitrary OSTBCs and multiple interferers.…”

Section: Introductionmentioning

confidence: 99%

“…A common shortcoming of the techniques in [5]- [8] is that they use the assumption that the exact channel state information (CSI) is available at the receiver. In practice, this condition can be violated because of channel estimation errors that are caused by limited/outdated training as well as the effects of multiaccess interference (MAI) and noise.…”

Section: Introductionmentioning

confidence: 99%

“…The proposed receivers can be viewed as robust generalizations of the MV techniques of [8] and are based on the worst-case performance optimization approach, which was successfully used to develop robust techniques for adaptive beamforming [9]- [12], multiuser detection [13]- [15], and power control [16], [17]. The proposed worst-case optimization-based receivers are shown to provide an improved robustness in the case of imperfect (erroneous) receiver CSI.…”

Section: Introductionmentioning

confidence: 99%

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Robust linear receivers for space-time block coded multiaccess MIMO systems with imperfect channel state information

Rong

Shahbazpanahi

Gershman

2005

IEEE Trans. Signal Process.

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Abstract-Recently, several linear receiver algorithms have been developed for space-time block-coded multiaccess multiple-input multiple-output (MIMO) wireless communication systems. All these techniques are based on the assumption that the channel state information (CSI) at the receiver side is perfect. However, in practical situations, the available CSI may be imperfect because of channel estimation errors and/or outdated training.In this paper, we develop new robust linear receiver techniques for joint space-time decoding and interference rejection in multiaccess MIMO systems that use orthogonal space-time block codes and erroneous CSI. The proposed receivers are based on worstcase performance optimization. They are shown to provide a substantially improved robustness against CSI mismatches as compared with the existing linear multiaccess MIMO receivers.Index Terms-Imperfect channel state information, multiaccess MIMO communications, orthogonal space-time block codes, robust linear receivers.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In contrast to [5]- [7], the techniques of [8] are applicable to the general case of arbitrary OSTBCs and multiple interferers.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Robust linear receivers for space-time block coded multiaccess MIMO systems with imperfect channel state information

Rong

Shahbazpanahi

Gershman

2005

IEEE Trans. Signal Process.

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Robustness Issues in Sensor Array Processing

Gershman

2010

Handbook on Array Processing and Sensor Networks

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Multiuser receiver scheme for full‐rate space–time coded CDMA system with imperfect estimation

Chen

2011

Int J Communication

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SUMMARYBy introducing a full-rate space-time coding (STC) scheme, a synchronous CDMA (code division multiple access) system with full-rate STC is given, and the corresponding uplink performance is investigated in Rayleigh fading channel with imperfect estimation. Considering that existing STC-CDMA system has high decoding complexity, low-complexity multiuser receiver schemes are developed for perfect and imperfect estimations, respectively. The schemes can make full use of the complex orthogonality of STC to reduce the high decoding complexity of the existing scheme, and have linear decoding complexity compared with the existing scheme with exponential decoding complexity. Moreover, the proposed schemes can achieve almost the same performance as the existing scheme. Compared with full-diversity STC-CDMA, the given full-rate STC-CDMA can achieve full data rate, low complexity, and partial diversity, and form efficient spatial interleaving. Thus, the concatenation of channel coding can effectively compensate for the performance loss due to partial diversity. Simulation results show that the full-rate STC-CDMA has lower bit error rate (BER) than full-diversity STC-CDMA systems under the same system throughput and concatenation of channel code. Moreover, the system BER with imperfect estimation are worse than that with perfect estimation due to the estimation error, which implies that the developed multiuser receiver schemes are valid and reasonable.

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Minimum Variance Linear Receivers for Multiaccess MIMO Wireless Systems with Space-Time Block Coding

Cited by 69 publications

References 16 publications

Robust linear receivers for space-time block coded multiaccess MIMO systems with imperfect channel state information

Robust linear receivers for space-time block coded multiaccess MIMO systems with imperfect channel state information

Robustness Issues in Sensor Array Processing

Multiuser receiver scheme for full‐rate space–time coded CDMA system with imperfect estimation

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