Search Results - "Ramprashad, S. A."

Joint Scheduling and ARQ for MU-MIMO Downlink in the Presence of Inter-Cell Interference by Shirani-Mehr, H, Papadopoulos, H, Ramprashad, S A, Caire, G

“…User scheduling and multiuser multi-antenna (MU-MIMO) transmission are at the core of high-rate data-oriented downlink schemes of the next-generation of…”
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Locally most powerful invariant tests for signal detection by Ramprashad, S.A., Parks, T.W.

“…Locally most powerful tests and invariant tests are combined in a new detector to test for the presence of a signal in additive white Gaussian noise. Such…”
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Achieving "Massive MIMO" Spectral Efficiency with a Not-so-Large Number of Antennas by Hoon Huh, Caire, G., Papadopoulos, H. C., Ramprashad, S. A.

“…Time-Division Duplexing (TDD) allows to estimate the downlink channels for an arbitrarily large number of base station antennas from a finite number of…”
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The multimode transform predictive coding paradigm by Ramprashad, S.A.

“…Presented is a new coding paradigm, multimode transform predictive coding (MTPC), which combines speech and audio coding principles in a single coding…”
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A two stage hybrid embedded speech/audio coding structure by Ramprashad, S.A.

“…A two stage hybrid embedded speech/audio coding structure is proposed. The structure uses a speech coder as a core to provide the minimal bitrate and an…”
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Improved Blind Interference Alignment in a Cellular Environment Using Power Allocation and Cell-Based Clusters by Chenwei Wang, Papadopoulos, H. C., Ramprashad, S. A., Caire, G.

“…Fundamentally, benefits of Multiple Input Multiple Output (MIMO) in wireless systems rest on increasing the number of Degrees of Freedom (DoFs) that can be…”
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Joint scheduling and hybrid ARQ for multi-cell MU-MIMO downlink by Shirani-Mehr, H, Caire, G, Papadopoulos, H, Ramprashad, S A

“…User scheduling and multiuser multi-antenna (MU-MIMO) transmission are at the core of high-rate data-oriented downlink schemes of the next-generation of…”
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MU-MIMO in LTE: Performance and the challenges for future enhancement by Ramprashad, S. A., Benjebbour, A.

“…We consider the performance and improvement of Multi-User MIMO (MU-MIMO) in 3GPP LTE. In particular, we build on academic guidance, demonstrating the link…”
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A Joint Scheduling and Cell Clustering Scheme for MU-MIMO Downlink with Limited Coordination by Ramprashad, S A, Caire, G, Papadopoulos, H C

“…In next-generation cellular systems, Multi-User MIMO (MU-MIMO) schemes are expected to achieve very high downlink throughput, provided that issues such as…”
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Achieving large spectral efficiencies from MU-MIMO with tens of antennas: Location-adaptive TDD MU-MIMO design and user scheduling by Papadopoulos, H C, Caire, G, Ramprashad, S A

“…We consider schemes for joint scheduling training and downlink MU-MIMO in multi-cell deployments that can yield high cell and cell-edge throughputs with tens…”
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Towards improving LTE SU/MU-MIMO performance: Issues in channel estimation, interpolation and feedback by Bursalioglu, O. Y., Ramprashad, S. A., Papadopoulos, H. C.

“…We consider improvements to the throughput performance of Single-User MIMO (SU-MIMO) and Multi-User MIMO (MU-MIMO) in the present 3GPP Long Term Evolution…”
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Performance Bounds and Improvements to HARQ in LTE under Unknown and Highly Variable Interference Due to MIMO by Mukherjee, S., Ramprashad, S. A., Yueqian Li

“…We consider the performance of Hybrid ARQ (HARQ) in LTE in the presence of inter-cell interference (ICI) due to MIMO transmissions. Such ICI is a function of…”
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Joint Scheduling and Hybrid-ARQ for MU-MIMO Downlink in the Presence of Inter-Cell Interference by Shirani-Mehr, H, Papadopoulos, H, Ramprashad, S A, Caire, G

“…User scheduling and multiuser multi-antenna (MU-MIMO) transmission are at the core of high-rate data-oriented downlink schemes foreseen in the next-generation…”
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Opportunistic MU-MIMO based on semi-blind interference alignment by Papadopoulos, H. C., Mukherjee, S., Ramprashad, S. A.

“…Recently, Wang etal. [1] proposed MU-MIMO schemes that yield degrees-of-freedom (DoF) gains by enabling blind interference alignment (BIA), i.e., without…”
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Locally most powerful variant test for signal detection by Ramprashad, S A, Parks, T W

“…Locally most powerful tests and invariant tests are combined in a new detector to test for the presence of a signal in additive noise. Such tests, locally most…”
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Design and operation of Blind Interference Alignment in cellular and cluster-based systems by Chenwei Wang, Papadopoulos, H C, Ramprashad, S A, Caire, G

“…We consider the use of Blind Interference Alignment (BIA) in a cellular environment as a means for supporting downlink Multi-User MIMO (MU-MIMO) transmission…”
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Achieving large spectral efficiency with TDD and not-so-many base-station antennas by Huh, H., Caire, G., Papadopoulos, H. C., Ramprashad, S. A.

“…Time-Division duplexing (TDD) allows to estimate the downlink channels for an arbitrarily large number of base station antennas by using a finite number of…”
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Semi-blind MU-MIMO based on limited features of the user multi-path intensity profiles by Papadopoulos, H. C., Mukherjee, S., Ramprashad, S. A.

“…Downlink MU-MIMO can achieve degrees of freedom (DoF) gains without needing multi-antenna terminals. To do so, conventional MU-MIMO requires sufficiently…”
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Multiuser MIMO downlink with limited inter-cell cooperation: Approximate interference alignment in time, frequency and space by Caire, G., Ramprashad, S.A., Papadopoulos, H.C., Pepin, C., Sundberg, C.-E.W.

“…We consider a realistic albeit simplified scenario for wireless cellular systems of the next generation (4G and beyond), where MIMO-OFDM, opportunistic…”
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Technical advances in digital audio radio broadcasting by Faller, C., Biing-Hwang Juang, Kroon, P., Hui-Ling Lou, Ramprashad, S.A., Sundberg, C.-E.W.

“…The move to digital is a natural progression taking place in all aspects of broadcast media applications from document processing in newspapers to video…”
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