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pro vyhledávání: '"Sayeed, Akbar M."'
Autor:
Sayeed, Akbar M
We investigate the relationship between Orthogonal Time Frequency Space (OTFS) modulation and Orthogonal Short Time Fourier (OSTF) signaling. OTFS was recently proposed as a new scheme for high Doppler scenarios and builds on OSTF. We first show that
Externí odkaz:
http://arxiv.org/abs/2109.06047
Akademický článek
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Millimeter-wave (mmWave) MIMO with large antenna array has attracted considerable interests from academic and industry communities, as it can provide larger bandwidth and higher spectrum efficiency. However, with hundreds of antennas, the number of r
Externí odkaz:
http://arxiv.org/abs/1607.04559
Autor:
Mehrpouyan, Hani, Khanzadi, M. Reza, Matthaiou, Michail, Sayeed, Akbar M., Schober, Robert, Hua, Yingbo
The allocation of a large amount of bandwidth by regulating bodies in the 70/80 GHz band, i.e., the E-band, has opened up new potentials and challenges for providing affordable and reliable Gigabit per second wireless point-to-point links. This artic
Externí odkaz:
http://arxiv.org/abs/1309.3997
This paper investigates generation of a secret key from a reciprocal wireless channel. In particular we consider wireless channels that exhibit sparse structure in the wideband regime and the impact of the sparsity on the secret key capacity. We expl
Externí odkaz:
http://arxiv.org/abs/1208.3790
We study the fundamental limits to secret key generation from an excited distributed source (EDS). In an EDS a pair of terminals observe dependent sources of randomness excited by a pre-arranged signal. We first determine the secret key capacity for
Externí odkaz:
http://arxiv.org/abs/1110.6476
We design and analyze a method to extract secret keys from the randomness inherent to wireless channels. We study a channel model for multipath wireless channel and exploit the channel diversity in generating secret key bits. We compare the key extra
Externí odkaz:
http://arxiv.org/abs/1107.3534
Many recent works that study the performance of multi-input multi-output (MIMO) systems in practice assume a Kronecker model where the variances of the channel entries, upon decomposition on to the transmit and the receive eigen-bases, admit a separa
Externí odkaz:
http://arxiv.org/abs/0808.0036
This paper studies the ergodic capacity of wideband multipath channels with limited feedback. Our work builds on recent results that have established the possibility of significant capacity gains in the wideband/low-SNR regime when there is perfect c
Externí odkaz:
http://arxiv.org/abs/0801.3521