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Time-Varying Fair Queuing Scheduling For Multicode Cdma Based On Dynamic Programming

by A. Stamoulis, N. Sidiropoulos, G.B. Giannakis
"... Fair Queuing (FQ) algorithms, which have been proposed for QoS wireline-wireless networking, rely on the fundamental idea that the service rate allocated to user proportional to a positive weight . Targeting wireless data networks with a multicode CDMA-based physical layer, we develop FQ w ..."
Abstract - Cited by 1 (0 self) - Add to MetaCart
Fair Queuing (FQ) algorithms, which have been proposed for QoS wireline-wireless networking, rely on the fundamental idea that the service rate allocated to user proportional to a positive weight . Targeting wireless data networks with a multicode CDMA-based physical layer, we develop FQ

Time-Varying Fair Queueing Scheduling for Multicode CDMA Based on Dynamic Programming

by Anastasios Stamoulis, Nicholas D. Sidiropoulos, Senior Member, Georgios B. Giannakis - IEEE Tran. on Wireless Communications , 2004
"... Fair queueing (FQ) algorithms, which have been proposed for quality of service (QoS) wireline/wireless networking, rely on the fundamental idea that the service rate allocated to each user is proportional to a positive weight. Targeting wireless data networks with a multicode CDMA-based physical lay ..."
Abstract - Cited by 8 (0 self) - Add to MetaCart
Fair queueing (FQ) algorithms, which have been proposed for quality of service (QoS) wireline/wireless networking, rely on the fundamental idea that the service rate allocated to each user is proportional to a positive weight. Targeting wireless data networks with a multicode CDMA-based physical

Cross-Layer Optimization for Multimedia Transport over Multicode CDMA Networks

by Hui Chen, Student Member, Henry C. B. Chan, Victor C. M. Leung
"... Abstract—Most previous work on code division multiple access (CDMA) considers the bit error ratio (BER) at the physical layer and the frame drop ratio (FDR) at the medium access control layer separately. However, a better system performance, e.g., in terms of a lower overall frame loss ratio (FLR), ..."
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), can be achieved if BER and FDR are jointly optimized. In this paper, we propose a cross-layer optimization scheme called traffic-adaptive scheme for multicode CDMA operating over a time division multiple access (TDMA) channel. Based on the traffic condition and buffer status, this scheme employs a

A CDMA-based Medium . . . UnderWater Acoustic Sensor Networks

by Dario Pompili, Tommaso Melodia, Ian F. Akyildiz , 2009
"... UnderWater Acoustic Sensor Networks (UW-ASNs) ... performing collaborative monitoring tasks. In this article, UW-MAC, a distributed Medium Access Control (MAC) protocol designed for UW-ASNs, is introduced. The proposed MAC protocol is a transmitter-based Code Division Multiple Access (CDMA) scheme t ..."
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that incorporates a novel closed-loop distributed algorithm to jointly set the optimal transmit power and code length. CDMA is the most promising physical layer and multiple access technique for UW-ASNs because it is robust to frequencyselective fading, it compensates for the effect of multipath at the receiver

UNCOORDINATED REAL-TIME VIDEO TRANSMISSION IN WIRELESS MULTICODE CDMA SYSTEMS:

by T Echnologies, An Smpt-based Approach
"... The transport of video over wireless links is a challenging problem due to the stringent playout deadlines of the video frames and the unreliability of the wireless links. We consider the real-time transmission of encoded video from distributed, uncoordinated wireless terminals to a central base sta ..."
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station in a multi-code CDMA system. Our approach is to employ the recently proposed simultaneous MAC packet transmission (SMPT) approach at the data link layer (in conjunction with UDP at the transport layer). We consider the real-time transmission of both video encoded in an open loop (i.e., without

MAC Packet Transmission (SMPT) in a Multicode CDMA Wireless System

by Manjunath Krishnam, Student Member, Martin Reisslein, Senior Member, Frank Fitzek - Dept. Elect. Eng., Arizona State Univ, Tempe, AZ. [Online]. Available: http://www.fulton.asu.edu/~mre , 2004
"... Stabilizing the throughput over wireless links is one of the key challenges in providing high-quality wireless multimedia services. Wireless links are typically stabilized by a combination of link-layer automatic repeat request (ARQ) mechanisms in conjunction with forward error correction and other ..."
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physical layer techniques. In this paper, we focus on the ARQ component and study a novel class of ARQ mechanisms, referred to as simultaneous MAC packet transmission (SMPT). In contrast to the conventional ARQ mechanisms that transmit one packet at a time over the wireless air interface, SMPT exploits

An Analytical Framework for Simultaneous MAC Packet Transmission (SMPT) in a Multi-Code CDMA Wireless System

by Manjunath Krishnam, Martin Reisslein, Frank Fitzek - Dept. Elect. Eng., Arizona State Univ, Tempe, AZ. [Online]. Available: http://www.fulton.asu.edu/~mre , 2003
"... Stabilizing the throughput over wireless links is one of the key challenges in providing high-quality wireless multimedia services. Wireless links are typically stabilized by a combination of link layer automatic repeat request (ARQ) mechanisms in conjunction with forward error correction and other ..."
Abstract - Cited by 6 (2 self) - Add to MetaCart
the parallel code channels provided by multi-code CDMA. SMPT stabilizes the wireless link by transmitting multiple packets in parallel in response to packet drops due to wireless link errors. While these parallel packet transmissions stabilize the link layer throughput, they also increase the interference

Performance Analysis of the Bluetooth Physical Layer

by Aditya Karnik, Anurag Kumar - IEEE Intl. Conf. on Wireless Personal Commun. (ICPWC'2000 , 2000
"... Bluetooth is an emerging, short range, indoor wireless network technology, based on FH-CDMA/TDD, which allows a collection of devices to form small overlapping networks, called piconets, in an ad hoc fashion. It is likely that the Bluetooth specification may be adopted in the IEEE 802.15 Wireless Pe ..."
Abstract - Cited by 8 (0 self) - Add to MetaCart
Bluetooth is an emerging, short range, indoor wireless network technology, based on FH-CDMA/TDD, which allows a collection of devices to form small overlapping networks, called piconets, in an ad hoc fashion. It is likely that the Bluetooth specification may be adopted in the IEEE 802.15 Wireless

Broadband Packet Wireless Access Based On Vsf-Ofcdm And Mc/ds-Cdma

by Hiroyuki Atarashi, Noriyuki Maeda, Sadayuki Abeta, Mamoru Sawahashi - IEICE Trans. Commun , 2002
"... This paper proposes broadband packet wireless access employing Variable Spreading Factor-Orthogonal Frequency and Code Division Multiplexing (VSF-OFCDM) with two-dimensional spreading that prioritizes time domain spreading in the forward link and Multi-carrier/DS-CDMA (MC/DSCDMA) in the reverse link ..."
Abstract - Cited by 25 (0 self) - Add to MetaCart
link for the system beyond IMT-2000. Based on the wireless access scheme, we propose major radio air interfaces in the physical layer to achieve our target maximum throughput beyond 100 Mbps and 20 Mbps in the forward and reverse links, respectively. Furthermore, we present key technologies

Packet Fair Queueing Scheduling Based on Multirate Multipath-Transparent CDMA for Wireless Networks

by Anastasios Stamoulis, Georgios B. Giannakis - In Proc. of INFOCOM2000, pages 1067–1076, Tel Aviv , 2000
"... The traditional layered approach to wireless networks (network, data link, and physical layer) utilizes suboptimally the limited available capacity. We propose a Quality of Service wireless framework based on the joint design of a packet fair queuing scheduler, demand-assignment Medium Access Contro ..."
Abstract - Cited by 22 (6 self) - Add to MetaCart
Control (MAC) protocol, and Multirate Multipath-Transparent CDMA-based physical layer. The unique code assignment procedure allows a direct mapping of the packet fair schedule to the physical layer transmission/reception, and supports transmission (service) rates of arbitrarily fine resolution
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