Joint Multi-Filter Design for Full-Duplex MU-MIMO Relaying

Sangiamwong, Jaturong; Asai, Takahiro; Hagiwara, Junichiro; Okumura, Yukihiko; Ohya, Tomoyuki

doi:10.1109/vetecs.2009.5073633

Cited by 35 publications

(28 citation statements)

References 8 publications

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“…Our limited transmitter/receiver-DR model implies that the (distorted) space-time pilot signal observed by receiver is (5) where, for notational convenience, we define if if (6) In (5), and are matrices of transmitter noise, receiver distortion, and AWGN, respectively. At the conclusion of training, we assume that the receiver estimates the channels via least-squares (LS), yielding…”

Section: A Pilot-aided Channel Estimationmentioning

confidence: 99%

“…While doing so, we suppress the and subscripts for brevity. Under limited transmitter-DR, the undistorted received spacetime signal is (33) where the spatial correlation 6 of the non-distorted pilot signal equals and hence the spatial correlation of the transmitter distortion equals . Conditioned on , the spatial correlation of is then (34) and hence the -conditional spatial correlation of the receiver distortion equals is aggregate complex Gaussian noise that is temporally white with -conditional spatial correlation (38) Due to the fact that , the channel estimate (7) takes the form (39) where is Gaussian channel estimation error.…”

Section: Appendix a Channel Estimation Detailsmentioning

confidence: 99%

“…We now analyze the -conditional correlations among the elements of the channel estimation error matrix. We begin by noticing (40) (41) 6 The spatial correlation of is defined as . where we used the fact that .…”

Section: Appendix a Channel Estimation Detailsmentioning

confidence: 99%

“…Propagation-domain suppression attempts to mitigate self-interference in the wireless propagation environment, before it has a chance to overwhelm the analog and digital circuitry. This may be accomplished by passive isolation (e.g., via antenna separation and/or shielding), directional or polarized antennas (e.g., [7], [11], and [13]), careful antenna placement (e.g., [2]), and/or transmit beamforming (e.g., [1], [6], [8], and [14]). …”

Section: Introductionmentioning

confidence: 99%

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Full-duplex bidirectional MIMO: Achievable rates under limited dynamic range

Day¹,

Bliss²,

Margetts³

et al. 2011

2011 Conference Record of the Forty Fifth Asilomar Conference on Signals, Systems and Computers (ASILOMAR)

103

299

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Abstract-In this paper, we consider the problem of full-duplex bidirectional communication between a pair of modems, each with multiple transmit and receive antennas. The principal difficulty in implementing such a system is that, due to the close proximity of each modem's transmit antennas to its receive antennas, each modem's outgoing signal can exceed the dynamic range of its input circuitry, making it difficult-if not impossible-to recover the desired incoming signal. To address these challenges, we consider systems that use pilot-aided channel estimates to perform transmit beamforming, receive beamforming, and interference cancellation. Modeling transmitter/receiver dynamic-range limitations explicitly, we derive tight upper and lower bounds on the achievable sum-rate, and propose a transmission scheme based on maximization of the lower bound, which requires us to (numerically) solve a nonconvex optimization problem. In addition, we derive an analytic approximation to the achievable sum-rate, and show, numerically, that it is quite accurate. We then study the behavior of the sum-rate as a function of signal-to-noise ratio, interference-to-noise ratio, transmitter/receiver dynamic range, number of antennas, and training length, using optimized half-duplex signaling as a baseline.

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Section: A Pilot-aided Channel Estimationmentioning

confidence: 99%

Section: Appendix a Channel Estimation Detailsmentioning

confidence: 99%

Section: Appendix a Channel Estimation Detailsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Full-duplex bidirectional MIMO: Achievable rates under limited dynamic range

Day¹,

Bliss²,

Margetts³

et al. 2011

2011 Conference Record of the Forty Fifth Asilomar Conference on Signals, Systems and Computers (ASILOMAR)

103

299

View full text Add to dashboard Cite

show abstract

“…Explicitly, the mobile-stations acting as relays cannot 24 be realistically expected to estimate the source-to-relay channels. 25 To motivate further research on noncoherent successive relay- design concerns in contemporary wireless systems. It is an-40 ticipated that wireless tele-traffic will grow substantially over 41 the forthcoming ten years [1, Figure 1].…”

mentioning

confidence: 99%

Non-Coherent Successive Relaying and Cooperation: Principles, Designs, and Applications

Poor

Hanzo

2015

IEEE Commun. Surv. Tutorials

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Full‐Duplex in Wireless Communications

Riihonen

Wichman

2016

Wiley Encyclopedia of Electrical and Electronics Engineering

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In‐band full‐duplex transceivers are able to transmit and receive simultaneously at the same frequency band. In wireless communications, such technology can offer potentially 100% increase in throughput when uplink and downlink simultaneously share the same band(s). In practice, this requires that a full‐duplex device is able to mitigate the inherent self‐interference caused by the leakage of the transmitted signal to the receiver chain. On the network level, full‐duplex devices change the statistics of cochannel interference in the system, which must be handled with appropriate medium access control. In addition, the capability of transmitting and receiving simultaneously gives gain only when there is enough buffered data to be transmitted in both ways. In practice, the gain from full‐duplex operation is less than 100%, but nevertheless theoretical studies and full‐duplex prototypes have demonstrated that it can still be substantial. This article presents an overview of the state‐of‐the‐art full‐duplex technology in wireless communications describing its performance and discussing challenges to make full‐duplex operation widely adopted in emerging systems.

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Joint Multi-Filter Design for Full-Duplex MU-MIMO Relaying

Cited by 35 publications

References 8 publications

Full-duplex bidirectional MIMO: Achievable rates under limited dynamic range

Full-duplex bidirectional MIMO: Achievable rates under limited dynamic range

Non-Coherent Successive Relaying and Cooperation: Principles, Designs, and Applications

Full‐Duplex in Wireless Communications

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