Atul Salhotra - Academia.edu (original) (raw)

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Papers by Atul Salhotra

Research paper thumbnail of The statistics of the MIMO frequency selective fading AWGN channel capacity

The classic problem of maximizing the information rate over parallel Gaussian independent subchan... more The classic problem of maximizing the information rate over parallel Gaussian independent subchannels with a limit on the total power leads to the elegant closed form water-filling solution. In the case of multi-input multi-output MIMO frequency selective channel the solution requires the derivation of the eigenvalue decomposition of the MIMO frequency response which, for every frequency bin, have generalized Wishart distribution. This paper shows the methodology used to derive the statistics of eigenvalues and eigenvectors and applies this methodology to the derivation of the average channel Capacity and of its characteristic function. The bound on the outage Capacity is then obtained using the characteristic function. Simple expressions are derived for the case of uncorrelated Rayleigh fading and for an arbitrary finite number of transmit and receive antennas.

Research paper thumbnail of Method and apparatus for clear channel assessment qualification

Method and apparatus for clear channel assessment qualification

Research paper thumbnail of Dual-technology wireless coexistence for multi-antenna devices

Dual-technology wireless coexistence for multi-antenna devices

Research paper thumbnail of Clear-channel assessment in 40 MHz wireless receivers

Clear-channel assessment in 40 MHz wireless receivers

Research paper thumbnail of Method and apparatus for detecting presence of an unmodulated RF carrier prior to a communication frame

Method and apparatus for detecting presence of an unmodulated RF carrier prior to a communication frame

Research paper thumbnail of Method and apparatus for preventing a first station from transmitting a signal onto a medium in response to the first station detecting interference on the medium

Method and apparatus for preventing a first station from transmitting a signal onto a medium in response to the first station detecting interference on the medium

Research paper thumbnail of Analog Bias Control for Packet Communication Systems

Analog Bias Control for Packet Communication Systems

Research paper thumbnail of Bias current control for a radio frequency unit of a wireless network interface

Bias current control for a radio frequency unit of a wireless network interface

Research paper thumbnail of Methods for reducing contention and/or handling channel access in a network

Methods for reducing contention and/or handling channel access in a network

Research paper thumbnail of I/Q calibration in the presence of phase offset

I/Q calibration in the presence of phase offset

Research paper thumbnail of Protected codebook selection at receiver for transmit beamforming

Protected codebook selection at receiver for transmit beamforming

Research paper thumbnail of Opportunistic 40 MHz Mode of Transmission in Wireless Transmitters

Opportunistic 40 MHz Mode of Transmission in Wireless Transmitters

Research paper thumbnail of Method and apparatus for detecting carrier leakage in a wireless or similar system

Method and apparatus for detecting carrier leakage in a wireless or similar system

Research paper thumbnail of Systems and Methods for Suppressing Interference in a Wireless Communication System

Systems and Methods for Suppressing Interference in a Wireless Communication System

Research paper thumbnail of Method and apparatus for compensating for DC offset in a communication system

Method and apparatus for compensating for DC offset in a communication system

Research paper thumbnail of Coexistence mechanism for 802.11AC compliant 80 MHz WLAN receivers

Coexistence mechanism for 802.11AC compliant 80 MHz WLAN receivers

Research paper thumbnail of Circuit and method for DC offset compensation

Circuit and method for DC offset compensation

Research paper thumbnail of Data stream interleaving with non-monotonically arranged data rotations for spatially diverse transmission

Data stream interleaving with non-monotonically arranged data rotations for spatially diverse transmission

Research paper thumbnail of Robust synchronization and detection mechanisms for OFDM WLAN systems

Robust synchronization and detection mechanisms for OFDM WLAN systems

Research paper thumbnail of Clear-channel assessment in 40 MHz wireless receivers

Clear-channel assessment in 40 MHz wireless receivers

Research paper thumbnail of The statistics of the MIMO frequency selective fading AWGN channel capacity

The classic problem of maximizing the information rate over parallel Gaussian independent subchan... more The classic problem of maximizing the information rate over parallel Gaussian independent subchannels with a limit on the total power leads to the elegant closed form water-filling solution. In the case of multi-input multi-output MIMO frequency selective channel the solution requires the derivation of the eigenvalue decomposition of the MIMO frequency response which, for every frequency bin, have generalized Wishart distribution. This paper shows the methodology used to derive the statistics of eigenvalues and eigenvectors and applies this methodology to the derivation of the average channel Capacity and of its characteristic function. The bound on the outage Capacity is then obtained using the characteristic function. Simple expressions are derived for the case of uncorrelated Rayleigh fading and for an arbitrary finite number of transmit and receive antennas.

Research paper thumbnail of Method and apparatus for clear channel assessment qualification

Method and apparatus for clear channel assessment qualification

Research paper thumbnail of Dual-technology wireless coexistence for multi-antenna devices

Dual-technology wireless coexistence for multi-antenna devices

Research paper thumbnail of Clear-channel assessment in 40 MHz wireless receivers

Clear-channel assessment in 40 MHz wireless receivers

Research paper thumbnail of Method and apparatus for detecting presence of an unmodulated RF carrier prior to a communication frame

Method and apparatus for detecting presence of an unmodulated RF carrier prior to a communication frame

Research paper thumbnail of Method and apparatus for preventing a first station from transmitting a signal onto a medium in response to the first station detecting interference on the medium

Method and apparatus for preventing a first station from transmitting a signal onto a medium in response to the first station detecting interference on the medium

Research paper thumbnail of Analog Bias Control for Packet Communication Systems

Analog Bias Control for Packet Communication Systems

Research paper thumbnail of Bias current control for a radio frequency unit of a wireless network interface

Bias current control for a radio frequency unit of a wireless network interface

Research paper thumbnail of Methods for reducing contention and/or handling channel access in a network

Methods for reducing contention and/or handling channel access in a network

Research paper thumbnail of I/Q calibration in the presence of phase offset

I/Q calibration in the presence of phase offset

Research paper thumbnail of Protected codebook selection at receiver for transmit beamforming

Protected codebook selection at receiver for transmit beamforming

Research paper thumbnail of Opportunistic 40 MHz Mode of Transmission in Wireless Transmitters

Opportunistic 40 MHz Mode of Transmission in Wireless Transmitters

Research paper thumbnail of Method and apparatus for detecting carrier leakage in a wireless or similar system

Method and apparatus for detecting carrier leakage in a wireless or similar system

Research paper thumbnail of Systems and Methods for Suppressing Interference in a Wireless Communication System

Systems and Methods for Suppressing Interference in a Wireless Communication System

Research paper thumbnail of Method and apparatus for compensating for DC offset in a communication system

Method and apparatus for compensating for DC offset in a communication system

Research paper thumbnail of Coexistence mechanism for 802.11AC compliant 80 MHz WLAN receivers

Coexistence mechanism for 802.11AC compliant 80 MHz WLAN receivers

Research paper thumbnail of Circuit and method for DC offset compensation

Circuit and method for DC offset compensation

Research paper thumbnail of Data stream interleaving with non-monotonically arranged data rotations for spatially diverse transmission

Data stream interleaving with non-monotonically arranged data rotations for spatially diverse transmission

Research paper thumbnail of Robust synchronization and detection mechanisms for OFDM WLAN systems

Robust synchronization and detection mechanisms for OFDM WLAN systems

Research paper thumbnail of Clear-channel assessment in 40 MHz wireless receivers

Clear-channel assessment in 40 MHz wireless receivers

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