Satyanarayana Katla | IIT Madras (original) (raw)
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Papers by Satyanarayana Katla
—In this correspondence, we propose a dual-function hybrid beamforming architecture, where the an... more —In this correspondence, we propose a dual-function hybrid beamforming architecture, where the antenna array is split into sub-arrays that are separated by a sufficiently large distance so that each sub-array experiences independent fading. The proposed architecture attains the dual-functions of beamforming and diversity. We then demonstrate that splitting the array into two sub-arrays provides the best performance in terms of the achievable rate as a benefit of the diversity gain obtained in addition to the beamforming gain. However, the performance starts depleting if the array is partitioned into more than two sub-arrays because of diminishing additional diversity gains, which fails to compensate for the beamforming gain erosion due to splitting the antenna arrays. Additionally, we analyze the so-called discrete Fourier transform-mutually unbiased bases (DFT-MUB) aided codebook invoked for the conceived design, which imposes an appealingly low complexity. Explicitly, we show that for the proposed dual-function sub-array-connected design, the DFT-MUB assisted codebook outperforms the state-of-the-art precoding benchmarks and performs close to the optimal precoding matrix.
This paper discusses the key principles of Gigabit Passive Optical Network (GPON) which is based ... more This paper discusses the key principles of Gigabit Passive Optical Network (GPON) which is based on Time Division Multiplexing Passive Optical Network (TDM PON) and Wavelength Division Multiplexing Passive Optical Network (WDM PON), which is considered to be next generation passive optical network. In the present day scenario, access to broadband is increasing at a rapid pace. Because of the advantages of fiber access in terms of capacity and cost, most of the countries have started deploying GPON access as an important part of national strategy. Though GPON is promising, it has few limitations. On the other hand WDM PON, a next generation network, is quite promising unlike GPON, it is easily scalable and interoperable with different vendors. This paper provides an overview of GPON, WDM PON and its key dissimilarities based on technicalities and cost.
An amplitude modulation transceiver design is presented, using a software defined radio platform.... more An amplitude modulation transceiver design is presented, using a software defined radio platform. Model based design is used to implement the various transmitter and receiver blocks. The wireless communication of audio signals is demonstrated.
—In this correspondence, we propose a dual-function hybrid beamforming architecture, where the an... more —In this correspondence, we propose a dual-function hybrid beamforming architecture, where the antenna array is split into sub-arrays that are separated by a sufficiently large distance so that each sub-array experiences independent fading. The proposed architecture attains the dual-functions of beamforming and diversity. We then demonstrate that splitting the array into two sub-arrays provides the best performance in terms of the achievable rate as a benefit of the diversity gain obtained in addition to the beamforming gain. However, the performance starts depleting if the array is partitioned into more than two sub-arrays because of diminishing additional diversity gains, which fails to compensate for the beamforming gain erosion due to splitting the antenna arrays. Additionally, we analyze the so-called discrete Fourier transform-mutually unbiased bases (DFT-MUB) aided codebook invoked for the conceived design, which imposes an appealingly low complexity. Explicitly, we show that for the proposed dual-function sub-array-connected design, the DFT-MUB assisted codebook outperforms the state-of-the-art precoding benchmarks and performs close to the optimal precoding matrix.
This paper discusses the key principles of Gigabit Passive Optical Network (GPON) which is based ... more This paper discusses the key principles of Gigabit Passive Optical Network (GPON) which is based on Time Division Multiplexing Passive Optical Network (TDM PON) and Wavelength Division Multiplexing Passive Optical Network (WDM PON), which is considered to be next generation passive optical network. In the present day scenario, access to broadband is increasing at a rapid pace. Because of the advantages of fiber access in terms of capacity and cost, most of the countries have started deploying GPON access as an important part of national strategy. Though GPON is promising, it has few limitations. On the other hand WDM PON, a next generation network, is quite promising unlike GPON, it is easily scalable and interoperable with different vendors. This paper provides an overview of GPON, WDM PON and its key dissimilarities based on technicalities and cost.
An amplitude modulation transceiver design is presented, using a software defined radio platform.... more An amplitude modulation transceiver design is presented, using a software defined radio platform. Model based design is used to implement the various transmitter and receiver blocks. The wireless communication of audio signals is demonstrated.