Search Results - "Nakhai, M.R."

Cognitive Radio game for secondary spectrum access problem by Attar, A., Nakhai, M.R., Aghvami, A.H.

“…In this paper we develop a framework for resource allocation in a secondary spectrum access scenario, where a group of cognitive radios (CR) access the…”
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Effect of Channel Uncertainty on the Mutual Information of MIMO Fading Channels by Musavian, L., Nakhai, M.R., Dohler, M., Aghvami, A.H.

“…In this paper, we study the effect of channel estimation error at the receiver on the mutual information of a multiple-input-multiple-output (MIMO) channel…”
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Cognitive Radio Transmission Based on Direct Sequence MC-CDMA by Attar, A., Nakhai, M.R., Aghvami, A.H.

“…In this paper, we propose a cognitive cellular system based on DS MC-CDMA to coexist with a number of narrow-band legacy systems in the same frequency range…”
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An accurate closed-form approximation of the average probability of error over a log-normal fading channel by Heliot, F., Ghavami, M., Nakhai, M.R.

“…The log-normal probability distribution is commonly used in wireless communications to model the shadowing and more recently the small scale fading for indoor…”
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Closed-form capacity expressions of orthogonalized correlated MIMO channels by Musavian, L., Dohler, M., Nakhai, M.R., Aghvami, A.H.

“…Space-time block codes are known to orthogonalize the multiple-input multiple-output (MIMO) wireless channel, thus reducing the space-time vector detection to…”
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Iterative MMSE receivers for space-time trellis-coded CDMA systems in multipath fading channels by Ostuni, F.S., Nakhai, M.R., Aghvami, A.H.

“…We explore code-division multiple-access (CDMA) systems with multiple transmit and receive antennas combined with space-time trellis codes over a…”
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Power-efficient downlink transmission in multicell networks with limited wireless backhaul by Tuan Anh Le, Nasseri, S., Zarrebini-Esfahani, A., Nakhai, M. R., Mills, A.

“…This article shows that division of a cell into tiers of smaller cells reduces power consumption. However, using the same frequency-time resources within…”
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Cognitive Radio Game: A Framework for Efficiency, Fairness and QoS Guarantee by Attar, A., Nakhai, M.R., Aghvami, A.H.

“…In this paper we develop a framework for resource allocation in a secondary spectrum access scenario where a group of cognitive radios (CR) access the…”
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Interference Management in Shared Spectrum for WiMAX Systems by Attar, A., Holland, O., Nakhai, M.R., Aghvami, A.H.

“…Spectrum sharing methods, such as secondary spectrum access, are powerful candidates to improve spectrum utilization and efficiency. In this paper, we develop…”
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Transmitter design in partially coherent antenna systems by Musavian, L., Dohler, M., Nakhai, M.R., Aghvami, A.H.

“…In this paper, we study the effect of channel estimation error on transmitter design in a multiple input multiple output (MIMO) channel. We assume that only…”
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Effect of Channel Uncertainty on the Mutual Information of MIMO Multiple Access Channels by Musavian, L., Nakhai, M.R., Dohler, M., Aissa, S.

“…In this paper, we study the effect of channel estimation error at the receiver on the mutual information of a multi user multiple input multiple output (MIMO)…”
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Capacity of Space Time Block Codes with Adaptive Transmission in Correlated Rayleigh Fading Channels by Musavian, L., Nakhai, M.R., Aghvami, A.H.

“…In this paper, we study the capacity of space time block codes (STBCs) over correlated Rayleigh flat-fading MIMO channels combined with adaptive transmitting…”
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The application of Walsh transform for forward error correction by Marvasti, F., Hung, M., Nakhai, M.R.

“…We present a novel class of forward error correcting codes constructed using the discrete Walsh transform. They are a class of double-error correcting codes…”
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Sub-optimal iterative MMSE receivers for space-time trellis coded CDMA systems in multi-path fading channels by Ostuni, F.S., Nakhai, M.R., Aghvami, A.H.

“…A code division multiple access (CDMA) scheme with multiple transmit and receive antennas is combined with space-time trellis codes over a frequency selective…”
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Split band CELP (SB-CELP) speech coder by Nakhai, M.R., Marvasti, F.A.

“…We discuss the split band code-excited linear prediction (SB-CELP) speech coder which employs an iterative version of the harmonic sinusoidal coding algorithm…”
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Application of extremum sampling in speech coding by Nakhai, M.R., Marvasti, F.A.

“…The magnitude spectrum of speech is sampled to extract the extremum (maximum) points representing the underlying sine-wave amplitudes. The resulting nonuniform…”
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WLC01-3: Effect of Channel Uncertainty on MIMO Systems with Covariance Information at the Transmitter by Musavian, L., Nakhai, M.R., Dohler, M., Aissa, S.

“…In this paper, we study the effect of channel estimation error on mutual information in a multiple input multiple output (MIMO) channel with correlated…”
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Spectrum sharing with legacy RANs using cognitive MC-CDMA by Attar, A., Nakhai, M.R., Aghvami, A.H.

“…In this paper we develop a cellular cognitive radio network based on MC-CDMA, which is able to coexist with a number of legacy RANs in a shared band. Using the…”
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A 4.1 kb/s hybrid speech coder by Nakhai, M.R., Marvasti, F.A.

“…In this paper, a hybrid speech coder based on a mixture of sinusoidal and CELP coding algorithms is introduced. The conventional harmonic sinusoidal coding…”
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Layered space-time codes with iterative receiver and space-time soft-output decoding in a Rayleigh fading environment by Ostuni, F.S., Abdool-Rassool, B., Nakhai, M.R., Aghvami, H.

“…We propose a modified BLAST architecture which employs space-time trellis codes at each layer as constituent codes, and an iterative parallel interference…”
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