Dr. Ajaz Sana Profile

Dr. Ajaz Sana

PH.D. Student at Bronx Community College

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Publications (9)

Proceedings Article | 24 January 2011 Paper

Unified cost effective next-generation passive optical network and IEEE 802.16m network architecture

Shahab Hussain, Syed Zaidi, H. Erkan, Ajaz Sana

Proceedings Volume 7958, 79580B (2011) https://doi.org/10.1117/12.875547

KEYWORDS: Network architectures, Relays, Remote sensing, Passive optical networks, Optical networks, Time division multiplexing, Wavelength division multiplexing, Atrial fibrillation, Received signal strength, Microwave radiation

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Proceedings Article | 24 January 2011 Paper

Next generation wireless technology WiMAX and its integration with EPON

Syed Zaidi, Shahab Hussain, Hasan Erkan, Ajaz Sana, Aparicio Carranza

Proceedings Volume 7958, 79580L (2011) https://doi.org/10.1117/12.876015

KEYWORDS: Network architectures, Asynchronous transfer mode, Standards development, Interfaces, Time division multiplexing, Fiber to the x, Microwave radiation, Optical fiber cables, Passive optical networks, Optical networks

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Proceedings Article | 23 January 2010 Paper

A novel PON-based mobile distributed cluster of antennas approach to provide impartial and broadband services to end users

Ajaz Sana, Samir Saddawi, Jalil Moghaddassi, Shahab Hussain, Syed Zaidi

Proceedings Volume 7620, 76200D (2010) https://doi.org/10.1117/12.842980

KEYWORDS: Antennas, Network architectures, Passive optical networks, Stars, Broadband telecommunications, Multimedia, Standards development, Microwave radiation, Reliability, Fiber optic networks

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Proceedings Article | 23 January 2010 Paper

Integration of PON and 4G mobile WiMAX networks to provide broadband integrated services to end users

Shahab Hussain, Syed Zaidi, M. Ali, Ajaz Sana, Samir Saddawi

Proceedings Volume 7620, 762006 (2010) https://doi.org/10.1117/12.842974

KEYWORDS: Broadband telecommunications, Network architectures, Time division multiplexing, Wavelength division multiplexing, WDM-PON, Wireless communications, Optical fibers, Optical networks, Atrial fibrillation, Passive optical networks

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Proceedings Article | 23 January 2010 Paper

Introduction and comparison of next-generation mobile wireless technologies

Syed Zaidi, Shahab Hussain, M. Ali, Ajaz Sana, Samir Saddawi, Aparicio Carranza

Proceedings Volume 7620, 762004 (2010) https://doi.org/10.1117/12.843010

KEYWORDS: Network architectures, Networks, Standards development, Mobile devices, Orthogonal frequency division multiplexing, Internet, Modulation, Antennas, Mobile communications, Explosives

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Proceedings Article | 10 September 2007 Paper

A novel PON based UMTS broadband wireless access network architecture with an algorithm to guarantee end to end QoS

Ajaz Sana, Shahab Hussain, Mohammed Ali, Samir Ahmed

Proceedings Volume 6773, 677305 (2007) https://doi.org/10.1117/12.753831

KEYWORDS: Broadband telecommunications, Interfaces, Network architectures, Networks, Video, Lead, Multimedia, Passive optical networks, Transceivers, Mobile communications

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In this paper we proposes a novel Passive Optical Network (PON) based broadband wireless access network architecture to provide multimedia services (video telephony, video streaming, mobile TV, mobile emails etc) to mobile users. In the conventional wireless access networks, the base stations (Node B) and Radio Network Controllers (RNC) are connected by point to point T1/E1 lines (Iub interface). The T1/E1 lines are expensive and add up to operating costs. Also the resources (transceivers and T1/E1) are designed for peak hours traffic, so most of the time the dedicated resources are idle and wasted. Further more the T1/E1 lines are not capable of supporting bandwidth (BW) required by next generation wireless multimedia services proposed by High Speed Packet Access (HSPA, Rel.5) for Universal Mobile Telecommunications System (UMTS) and Evolution Data only (EV-DO) for Code Division Multiple Access 2000 (CDMA2000). The proposed PON based back haul can provide Giga bit data rates and Iub interface can be dynamically shared by Node Bs. The BW is dynamically allocated and the unused BW from lightly loaded Node Bs is assigned to heavily loaded Node Bs. We also propose a novel algorithm to provide end to end Quality of Service (QoS) (between RNC and user equipment).The algorithm provides QoS bounds in the wired domain as well as in wireless domain with compensation for wireless link errors. Because of the air interface there can be certain times when the user equipment (UE) is unable to communicate with Node B (usually referred to as link error). Since the link errors are bursty and location dependent. For a proposed approach, the scheduler at the Node B maps priorities and weights for QoS into wireless MAC. The compensations for errored links is provided by the swapping of services between the active users and the user data is divided into flows, with flows allowed to lag or lead. The algorithm guarantees (1)delay and throughput for error-free flows,(2)short term fairness among error-free flows,(3)long term fairness among errored and error-free flows,(4)graceful degradation for leading flows and graceful compensation for lagging flows.

Proceedings Article | 10 September 2007 Paper

Enhanced dynamic bandwidth allocation in WDM-PON

Xin Ye, Ajaz Sana, Chadi Assi, Mohamed Ali

Proceedings Volume 6776, 67760H (2007) https://doi.org/10.1117/12.753476

KEYWORDS: WDM-PON, Networks, Passive optical networks, Computer simulations, Time division multiplexing, Network architectures, Wavelength division multiplexing, Statistical multiplexing, Broadband telecommunications, Tunable lasers

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Proceedings Article | 10 September 2007 Paper

A novel fair queuing algorithm for hybrid wired/wireless architecture with wireless compensation to provide end-to-end quality of service support

Ajaz Sana, Xin Ye, Shahab Hussain, Mohammed Ali, Samir Ahmed

Proceedings Volume 6776, 677607 (2007) https://doi.org/10.1117/12.735366

KEYWORDS: Transceivers, Free space optics, Signal processing, Video, Computer simulations, Lead, Network architectures, Multiplexing, Error analysis, Optical networks

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Proceedings Article | 2 October 2006 Paper

Design and performance of hybrid FSO/RF architecture for next-generation broadband wireless access networks

Ajaz Sana, Hasan Erkan, Samir Ahmed, Mohammed Ali

Proceedings Volume 6390, 63900A (2006) https://doi.org/10.1117/12.686519

KEYWORDS: Network architectures, Free space optics, Broadband telecommunications, Signal processing, Error control coding, Transceivers, Microwave radiation, Fiber to the x, Optical networks, Optical fibers

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Showing 5 of 9 publications

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