A Virtual Layered Space Time Receiver with Maximum Likelihood Channel Detection

Denno, Satoshi; Makino, Hírofumi; Daisuke, Umehara; Morikura, Masahiro

doi:10.1109/vetecs.2009.5073354

Cited by 18 publications

(9 citation statements)

References 9 publications

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“…signals modulated with any modulation schemes can be decomposed into the phase and the real signal as follows [9].…”

Section: A Virtual Layered Signal Processing Receiver For 16-qammentioning

confidence: 99%

“…If these detectors are applied in the down links, thus, the number of streams is also limited. On the other hand, the virtual layered space time receiver has been proposed that achieves superior performance with relatively low computational load even when the number of streams exceeds that of the received antennas [9]. However, the configuration of the receiver has been shown only for the quaternary phase shift keying (QPSK) modulation, while multilevel modulations are introduced to increase transmission speed in the wireless communication systems.…”

Section: Introductionmentioning

confidence: 99%

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A virtual layered signal processing receiver for 16-QAM with transmit signal rotation

Denno

Imamura

Morikura

2011

2011 5th International Conference on Signal Processing and Communication Systems (ICSPCS)

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This paper proposes a novel receiver, named as "a virtual layered signal processing receiver for 16 QAM" for high speed signal transmission in wireless communication systems. In the proposed receiver, the ordered successive detection is applied with the concept of virtual channel, which enables to detect layered streams even when the number of the layered streams is more than that of the received antennas. Therefore, the proposed receiver can increase the transmission speed of the down link in which a receiver is implemented in small terminals with a small number of antennas. The proposed receiver unfortunately degrades compared with the maximum likelihood estimation (MLD), however, when the channel matrix of the virtual channel is not full rank. To avoid the performance degradation, this paper proposes a technique that transmit signal constellation is phaserotated with information fed back from the receiver. Actually, it is confirmed by computer simulation that only 1-bit of feed back information is enough to achieve the upper bound in BER performance in a 2 × 1 MIMO system.

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“…signals modulated with any modulation schemes can be decomposed into the phase and the real signal as follows [9].…”

Section: A Virtual Layered Signal Processing Receiver For 16-qammentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A virtual layered signal processing receiver for 16-QAM with transmit signal rotation

Denno

Imamura

Morikura

2011

2011 5th International Conference on Signal Processing and Communication Systems (ICSPCS)

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“…Thus, the relationship between the transmitted and received signals can be expressed as shown in (4). By using the value λ m , the transmitted signals can be detected by using the concept of virtual channels that is described in the following sections.…”

Section: System Modelmentioning

confidence: 99%

“…In order to detect the transmitted signals when the number of the layered signals exceeds that of receiving antennas, the concept of virtual channels is proposed [4]. In this section, we explain about this concept.…”

Section: The Concept Of Virtual Channelsmentioning

confidence: 99%

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Iterative decoding on soft information for virtual layered space-frequency receivers

Imamura

Denno

Daisuke

et al. 2010

2010 4th International Conference on Signal Processing and Communication Systems

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In this paper, we propose an iteration scheme for the virtual layered space frequency communication architecture. The architecture enables the decoding of the transmitted orthogonal frequency division multiplexing (OFDM)-QPSK signals even if the number of spatial multiplexed layers is twice that of receiving antennas over multipath fading channels. In the proposed iteration scheme, the MAP decoder and detector exchange soft information on the virtual channel. Using the soft informations, the architecture achieves much higher performance with lower computational complexity compared to maximum likelihood detection (MLD) even when the punctured code is used. Consequently, a gain of 4.5 dB can be achieved at a BER of 10 −3 compared to that achieved with the MLD in the 4 × 2 MIMO-OFDM system when the rate 3/4 punctured code is used. The performance of the proposed architecture is verified by carrying out computer simulations.

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An overloaded MIMO signal detection scheme with slab decoding and lattice reduction

Hayakawa

Hayashi

Kaneko

2015

2015 21st Asia-Pacific Conference on Communications (APCC)

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A Virtual Layered Space Time Receiver with Maximum Likelihood Channel Detection

Cited by 18 publications

References 9 publications

A virtual layered signal processing receiver for 16-QAM with transmit signal rotation

A virtual layered signal processing receiver for 16-QAM with transmit signal rotation

Iterative decoding on soft information for virtual layered space-frequency receivers

An overloaded MIMO signal detection scheme with slab decoding and lattice reduction

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