On the Capacity of the Half-Duplex Diamond Channel (2009)
Bagheri, Hossein, Motahari, Abolfazl S., Khandani, Amir K.
In this paper, a dual-hop communication system composed of a source S and a destination D connected through two non-interfering half-duplex relays, R1 and R2, is considered. In the literature of...
Capacity bounds for the Gaussian interference channel,” submitted to (2009)
Abolfazl S. Motahari, Student Member, Amir K. Kh
The capacity region of the two-user Gaussian Interference Channel (IC) is studied. Three classes of channels are considered: weak, one-sided, and mixed Gaussian ICs. For the weak Gaussian IC, a new...
1 Secure Broadcasting: The Secrecy Rate Region (2009)
Ghadamali Bagherikaram, Abolfazl S. Motahari, Amir K. Kh
In this paper, we consider a scenario where a source node wishes to broadcast two confidential messages for two respective receivers, while a wire-tapper also receives the transmitted signal. This...
Capacity bounds for the Gaussian interference channel,” submitted to (2009)
Abolfazl S. Motahari, Amir K. Kh
Abstract — The capacity region of the two-user Gaussian Interference Channel (IC) is studied. Two classes of channels are considered: weak and mixed Gaussian IC. For the weak Gaussian IC, a new...
Capacity Bounds for 1 the Gaussian Interference Channel (2009)
Abolfazl S. Motahari, Student Member, Amir K. Kh
The capacity region of the two-user Gaussian Interference Channel (IC) is studied. Three classes of channels are considered: weak, one-sided, and mixed Gaussian IC. For the weak Gaussian IC, a new...
Secrecy Capacity Region of Gaussian Broadcast Channel (2009)
Ghadamali Bagherikaram, Abolfazl S. Motahari, Amir K. Kh
Abstract—In this paper, we first consider a scenario where a source node wishes to broadcast two confidential messages for two respective receivers, while a wire-taper also receives the transmitted...
Secure Broadcasting: The Secrecy Rate Region (2009)
Ghadamali Bagherikaram, Abolfazl S. Motahari, Amir K. Kh
Abstract — In this paper, we consider a scenario where a source node wishes to broadcast two confidential messages for two respective receivers, while a wire-tapper also receives the transmitted...
The Secrecy Capacity Region of the Degraded Vector Gaussian Broadcast Channel (2009)
Ghadamali Bagherikaram, Abolfazl S. Motahari, Amir K. Kh
Abstract—In this paper, we consider a scenario where a source node wishes to broadcast two confidential messages for two respective receivers via a Gaussian MIMO broadcast channel. A wire-tapper...
Secrecy Rate Region of the Broadcast Channel with an Eavesdropper (2009)
Bagherikaram, Ghadamali, Motahari, Abolfazl S., Khandani, Amir K.
In this paper, we consider a scenario where a source node wishes to broadcast two confidential messages to two receivers, while a wire-tapper also receives the transmitted signal. This model is...
On the Symmetric Gaussian Interference Channel with Partial Unidirectional Cooperation (2009)
Bagheri, Hossein, Motahari, Abolfazl S., Khandani, Amir K.
A two-user symmetric Gaussian Interference Channel (IC) is considered in which a noiseless unidirectional link connects one encoder to the other. Having a constant capacity, the additional link...
Real Interference Alignment with Real Numbers (2009)
Motahari, Abolfazl S., Gharan, Shahab Oveis, Khandani, Amir K.
A novel coding scheme applicable in networks with single antenna nodes is proposed. This scheme converts a single antenna system to an equivalent Multiple Input Multiple Output (MIMO) system with...
The Secrecy Capacity Region of the Degraded Vector Gaussian Broadcast Channel (2009)
Bagherikaram, Ghadamali, Motahari, Abolfazl S., Khandani, Amir K.
In this paper, we consider a scenario where a source node wishes to broadcast two confidential messages for two respective receivers via a Gaussian MIMO broadcast channel. A wire-tapper also receives...
The Secrecy Capacity Region of the Gaussian MIMO Broadcast Channel (2009)
Bagherikaram, Ghadamali, Motahari, Abolfazl S., Khandani, Amir K.
In this paper, we consider a scenario where a source node wishes to broadcast two confidential messages for two respective receivers via a Gaussian MIMO broadcast channel. A wire-tapper also receives...
The Secrecy Rate Region of the Broadcast Channel (2008)
Bagherikaram, Ghadamali, Motahari, Abolfazl S., Khandani, Amir K.
In this paper, we consider a scenario where a source node wishes to broadcast two confidential messages for two respective receivers, while a wire-tapper also receives the transmitted signal. This...
On the Capacity of the Diamond Half-Duplex Relay Channel (2008)
Bagheri, Hossein, Motahari, Abolfazl S., Khandani, Amir K.
We consider a diamond-shaped dual-hop communication system consisting a source, two parallel half-duplex relays and a destination. In a single antenna configuration, it has been previously shown that...
M-user Gaussian Interference Channels: To Decode the Interference or To Consider it as Noise (2008)
Abolfazl S. Motahari, Amir K. Kh
Abstract — We address data transmission over the M-user Gaussian interference channel, where users send data using single Gaussian codebooks. We first present a polynomial-time algorithm for...
Decomposition of the MIMO X Channels (2008)
Abolfazl S. Motahari, Amir K. Kh
Abstract—In a multiple antenna system with two transmitters and two receivers, a scenario of data communication, known as the X channel, is studied in which each receiver receives data from both...
Decomposition of the MIMO X Channels (2008)
Abolfazl S. Motahari, Amir K. Kh
Abstract — In a multiple antenna system with two transmitters and two receivers, a scenario of data communication, known as the X channel, is studied in which each receiver receives data from both...
To Decode the Interference or To Consider it as Noise (2008)
Abolfazl S. Motahari, Student Member, Amir K. Kh
Abstract — We address single-user data transmission over a channel where the received signal incurs interference from a finite number of users (interfering users) that use single codebooks for...
Communication over MIMO X Channel: Signalling and Performance Analysis (2008)
Abolfazl S. Motahari, Amir K. Kh
In a multiple antenna system with two transmitters and two receivers, a scenario of data communi-cation, known as the X channel, is studied in which each receiver receives data from both...
Capacity Bounds for the Gaussian Interference Channel (2008)
Abolfazl S. Motahari, Student Member, Amir K. Kh
The capacity region of the two-user Gaussian Interference Channel (IC) is studied. Three classes of channels are considered: weak, one-sided, and mixed Gaussian ICs. For the weak Gaussian IC, a new...
Capacity Bounds for the Gaussian Interference Channel (2008)
Motahari, Abolfazl S., Khandani, Amir K.
The capacity region of the two-user Gaussian Interference Channel (IC) is studied. Three classes of channels are considered: weak, one-sided, and mixed Gaussian IC. For the weak Gaussian IC, a new...
To Decode the Interference or To Consider it as Noise (2007)
Motahari, Abolfazl S., Khandani, Amir K.
We address single-user data transmission over a channel where the received signal incurs interference from a finite number of users (interfering users) that use single codebooks for transmitting...
Capacity Bounds for the Gaussian Interference Channel (2007)
Abolfazl S. Motahari, Amir K. Kh, Abolfazl S. Motahari, Student Member, Amir K. Kh
The capacity region of the two-user Gaussian Interference Channel (IC) is studied. Three classes of channels are considered: weak, one-sided, and mixed Gaussian ICs. For the weak Gaussian IC, a new...
Capacity Bounds for the Gaussian Interference Channel (2007)
Abolfazl S. Motahari, A. K. Kh, Abolfazl S. Motahari, Student Member, Amir K. Kh
The capacity region of the two-user Gaussian Interference Channel (IC) is studied. Three classes of channels are considered: weak, one-sided, and mixed Gaussian ICs. For the weak Gaussian IC, a new...
Communication over x channel: Signalling and multiplexing gain (2006)
Amir K. Kh, Abolfazl S. Motahari, Abolfazl S. Motahari, Amir K
In a multiple antenna system with two transmitters and two receivers, a new sce-nario of data communication is studied in which each receiver receives data from both transmitters. In this scenario,...
Signaling over mimo multi-base systems: Combination of multi-access and broadcast schemes (2006)
Abolfazl S. Motahari, Amir K. Kh
Abstract — A new structure for multi-base systems is studied in which each user receives data from two nearby base stations, rather than only from the strongest one. This system can be considered...
Signaling over mimo multi-base systems: Combination of multi-access and broadcast schemes (2006)
Abolfazl S. Motahari, Amir K. Kh
Abstract — A new structure for multi-base systems is studied in which each user receives data from two nearby base stations, rather than only from the strongest one. This system can be considered...
Communication over MIMO X Channel: Signalling and Performance Analysis (2006)
Abolfazl S. Motahari, Amir K. Kh, Abolfazl S. Motahari, Amir K
In a multiple antenna system with two transmitters and two receivers, a scenario of data communication, known as the X channel, is studied in which each receiver receives data from both transmitters....