High-throughput, high-performance OFDM via pseudo-orthogonal carrier interferometry type 2

Wiegandt, D.A.; Nassar, C.R.

doi:10.1109/wpmc.2002.1088271

Cited by 7 publications

(3 citation statements)

References 6 publications

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“…This will happen anytime there are fewer transmit streams than receive antennas. Equation (4) [6,7] shows how the application of these two filters in series results in the original MMSE linear estimator. Equations (3) and (4) together show how the MMSE estimator can be broken down into a two-step process when ideal CSI is available.…”

Section: IImentioning

confidence: 99%

A Modifed Approach on MMSE MIMO Interference Cancellation Detection

Liu

2016

2016 Eighth International Conference on Measuring Technology and Mechatronics Automation (ICMTMA)

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In this paper, an novel MMSE MIMO detector is proposed with respect to MMSE MIMO channel estimation. We will show how a two-step MMSE MIMO estimator can be used to facilitate packet detection as well as to provide superior bit error rate performance. This proposed detector takes channel estimation errors into account by the statistical characteristics of MMSE MIMO channel estimation. When compared with existing soft-output MMSE MIMO detector, simulation results show that the proposed novel detector can remarkably reduce the residual error floor due to the channel estimation errors, while achieving significant performance gain at the cost of negligible increase of complexity. We will show how this approach significantly improves packet detection and how the overall solution approaches the performance of the classical MMSE estimator.

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Section: IImentioning

confidence: 99%

A Modifed Approach on MMSE MIMO Interference Cancellation Detection

Liu

2016

2016 Eighth International Conference on Measuring Technology and Mechatronics Automation (ICMTMA)

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“…Most of these involve some form of cooperative scheduling [1,2]. Some work has been done to show that time domain signal processing can be used to mitigate the effects of narrowband interference [3][4][5][6][7][8]. They have shown in simulation how their techniques can suppress interference on the data payload, but have not taken into account how interference affects other parts of the receiver.…”

Section: Introductionmentioning

confidence: 99%

A practical two-stage MMSE based MIMO detector for interference mitigation with non-cooperative interferers

Shah

Daneshrad

2011

J Wireless Com Network

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Wireless Multiple Input Multiple Output systems provide system designers with additional degrees of freedom. These can be used to increase throughput, reliability, or even combat spatial interference. The classical Minimum Mean Squared Error (MMSE) solution is the optimal linear estimator for these systems. Its primary drawback is that it requires an estimate of the channel response. This is generally not an issue when interference is absent. However, in environments where interference power is stronger than the desired signal power, this can become difficult to estimate. The problem is even worse in packet-based systems, which rely on training data to estimate the channel before estimating the signal. A strong interference will hinder the receiver's ability to detect the presence of the packet. This makes it impossible to estimate the channel, a critical component for the classical MMSE estimator. For this reason, the classical solution is infeasible in real environments with stronger interferences. We propose a two-stage system that uses practically obtainable channel state information. We will show how this approach significantly improves packet detection, and how the overall solution approaches the performance of the classical MMSE estimator.

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“…Since PO-CI/MC-CDMA systems own the novel characteristics above, a lot of communication methods have been researched and proposed based on PO-CI sequences, which have been analyzed in Refs. [5][6][7][8][9] in an OFDM system. In Ref.…”

Section: Introductionmentioning

confidence: 99%

A PO-CI/MC-CDMA scheme for high modulation styles

Zhang

Tang

Tao

et al. 2008

Front. Electr. Electron. Eng. Ch

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Through analyzing the theoretical spreading principle, it has been proved in this paper that the benefit of pseudo-orthogonal carrier interferometry (PO-CI) spreading code is not supported when complex signal modulation (e.g., quadrature phase-shift keying (QPSK) and quadrature amplitude modulation (QAM)) types are employed. On this basis, a novel and feasible structure for this problem is brought forward. Within the structure mentioned, instead of complex modulation patterns, pulse amplitude modulation (PAM) combined with PO-CI spreading code is utilized. This allows us to maintain the throughput increase of a multi-carrier code division multiple access (MC-CDMA) system with minimal loss in performance and no bandwidth expansion.

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High-throughput, high-performance OFDM via pseudo-orthogonal carrier interferometry type 2

Cited by 7 publications

References 6 publications

A Modifed Approach on MMSE MIMO Interference Cancellation Detection

A Modifed Approach on MMSE MIMO Interference Cancellation Detection

A practical two-stage MMSE based MIMO detector for interference mitigation with non-cooperative interferers

A PO-CI/MC-CDMA scheme for high modulation styles

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