cross+layer+design+issues+for+ad+hoc+wireless+networks

... “New cross- layer design approach to ad hoc networks under Rayleigh fading,” IEEE Journal on Selected Areas in Communications, vol 23, no 1, pp 28–39, 2005 [6] R Knopp and P A Humblet, “Information ... transmit, leading to even lower efficiency Hence, the exponential backoff of IEEE 802.11 is unsuitable for such ad hoc forwarding of packets, which is also shown in [36] Lastly, the fading channel leads ... improve the performance of ad hoc networks In this paper, we model and simulate Channel MAC and show that Channel MAC can achieve higher performance than IEEE 802.11 in distributed wireless networks...

Ngày tải lên: 21/06/2014, 22:20

... Krunz, “CDMA-based MAC protocol for wireless ad hoc networks, ” in Proceedings of the 4th ACM Interational Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc ’03), pp 153–164, Annapolis, ... before any node in the network runs out of its energy can, thus, be prolonged RELATED WORK There are some research works that have already been done on topology control for ad hoc wireless networks ... problem for nonhomogenous wireless networks SYSTEM MODEL We adopt the widely used transmission power model for raα dio networks, pi j = di, j , where pi j is the transmission power needed for node...

Ngày tải lên: 22/06/2014, 22:20

... discoveries, which is the most critical part of ad hoc wireless sensor networks EARP is well suited for sensor networks due to its ability to adapt to the environment and make routing decisions ... routing in ad hoc wireless networks, ” in Mobile Computing, vol 353, chapter 5, pp 153–181, Kluwer Academic, Boston, Mass, USA, 1996 [4] G Kunito, K Yamazaki, H Morikawa, and T Aoyama, “An ad- hoc routing ... Rappaport, Wireless Communications, Principles and Practice, Prentice-Hall, Upper Saddle River, NJ, USA, 1996 [13] A B McDonald and T Znati, “A path availability model for wireless ad- hoc networks, ”...

Ngày tải lên: 23/06/2014, 00:20

... 1.1 Ad hoc networking 1.2 The ad hoc wireless network: operating principles 1.3 Ad hoc networks: vulnerabilities 1.4 Ad hoc networks: security requirements 1.5 Quality of service 1.6 Further reading ... nature of ad hoc networks, a set of security requirements is subsequently presented The chapter also introduces the quality of service issues that are relevant for ad hoc networks 1.1 Ad hoc networking ... challenges for ad hoc networking The lack of fixed base stations in ad hoc networks means that there is no dedicated agency for managing the channel resources for the network nodes Instead, carefully designed...

Ngày tải lên: 25/03/2014, 12:07

... techniques in ad hoc wireless networks — part I Routing techniques in ad hoc wireless networks — part II Applications of ad hoc wireless networks Power management in ad hoc wireless networks Connection ... Power-Conservative Designs in Ad Hoc Wireless Networks Yu-Chee Tseng and Ting-Yu Lin Performance Analysis of Wireless Ad Hoc Networks Anurag Kumar and Aditya Karnik C oding for the Wireless Channel ... Securing Mobile Ad Hoc Networks Panagiotis Papadimitratos and Zygmunt J Haas 32 Security Issues in Ad Hoc Networks Dan Zhou © 2003 by CRC Press LLC Body, Personal, and Local Ad Hoc Wireless Networks...

Ngày tải lên: 03/06/2014, 01:08

... pp 173–219, Addison-Wesley, Reading, Mass, USA, 2001 [2] D B Johnson, D A Maltz, and J Broch, “DSR: the dynamic source routing protocol for multi-hop wireless ad hoc networks, ” in Ad Hoc Networking, ... Madsen, F H P Fitzek, and R Prasad, “Impact of different mobility models on connectivity probability of a wireless ad hoc network,” in Proceedings of the International Workshop on Wireless Ad- Hoc ... Ad- Hoc Networks, pp 120–124, June 2004 [5] F Bai, N Sadagopan, and A Helmy, “Important: a framework to systematically analyze the impact of mobility on performance of routing protocols for adhoc networks, ”...

Ngày tải lên: 21/06/2014, 11:20

... and a novel cross- layer design to improve the utilization of radio resource was proposed The proposed TSA scheme decreases the transmission overhead by regularizing the radio resources for individual ... this article as: Chen et al.: Cross- layer design for radio resource allocation based on priority scheduling in OFDMA wireless access network EURASIP Journal on Wireless Communications and Networking ... that at least 60 bits of overhead are required for each additional traffic burst Inappropriate allocation of time slots for the required bandwidth of each connection leads to more traffic bursts...

Ngày tải lên: 21/06/2014, 02:20

... Romaszko and Blondia, entitled Cross layer PHY-MAC protocol for wireless static and mobile ad hoc networks, ” introduces a novel protocol for use in ad hoc networks which performs significantly better, ... resource allocation In “Adaptive cross- layer distributed energy-efficient resource allocation algorithms for wireless data networks, ” Buzzi et al address the problem of adaptive and distributed ... spread spectrum ad hoc networks with multiuser detection” proposes an integrated design of MAC and physical (PHY) protocols based on multiuser detection (MUD) to increase the throughput of ad hoc...

Ngày tải lên: 21/06/2014, 22:20

... H V Poor, Wireless Networks: Multiuser Detection in Cross- Layer Design, Springer, New York, NY, USA, 2005 [12] C Comaniciu and H V Poor, “QoS provisioning for wireless ad hoc data networks, ” ... Design challenges for energy-constrained ad hoc wireless networks, ” IEEE Wireless Communications, vol 9, no 4, pp 8–27, 2002 [15] V Kawadia and P R Kumar, “A cautionary perspective on cross- layer ... different layers act independently to increase the energy efficiency in the network, the information exchange between layers leads to an iterative adaptation procedure, in which layers take turns to adjust...

Ngày tải lên: 22/06/2014, 19:20

... 2 -layer adaptive modulation/coding scheme employing JSCC 37.6 PSNR (dB) 37.4 37.2 Single -layer uniform 8-PSK with JSCC Single -layer uniform QPSK with JSCC 37 36.8 36.6 36.4 Single -layer uniform ... either uniform QPSK or uniform 8-PSK without channel coding (2) A 2 -layer system using nonuniform 8-PSK without channel coding (3) A single -layer system using either uniform QPSK or uniform 8-PSK ... video stream with uniform modulation; for the 2 -layer system, the same R(1) = 1/2 code is used for the base layer and an RCPC c code with R(2) = 1/3 is used for the enhancement layer. 7 c The results...

Ngày tải lên: 22/06/2014, 19:20

... results in the transformation of layerspecific parameters into parameters that are comprehensible for the cross- layer optimizer, so-called cross- layer parameters (2) Cross- layer optimization: ... higher layers Its influence on system performance therefore has to be abstracted into a form which is meaningful for the other layers involved in the cross- layer optimization (2) Signaling overhead: ... the radio link layer The application layer is the layer where the media data is compressed, packetized, and scheduled for transmission The key parameters to be abstracted for the cross- layer...

Ngày tải lên: 22/06/2014, 22:20

... H V Poor, Wireless Networks: Multiuser Detection in Cross- Layer Design, Springer, New York, NY, USA, 2005 [12] C Comaniciu and H V Poor, “QoS provisioning for wireless ad hoc data networks, ” ... Design challenges for energy-constrained ad hoc wireless networks, ” IEEE Wireless Communications, vol 9, no 4, pp 8–27, 2002 [15] V Kawadia and P R Kumar, “A cautionary perspective on cross- layer ... different layers act independently to increase the energy efficiency in the network, the information exchange between layers leads to an iterative adaptation procedure, in which layers take turns to adjust...

Ngày tải lên: 22/06/2014, 22:20

... for higher loss rates the acknowledged mode with RLC layer retransmission outperforms MBMS FEC by about 2–3 dB In any case, broadcast systems with application layer FEC add significant delay For ... single RTP packet, and the NAL unit header coserves as an RTP payload header Each NAL unit consists of a one-byte header and the payload byte string The header indicates the type of the NAL unit ... tools are used 4.1 DESIGN WITH FORWARD ERROR CORRECTION Forward error correction mechanisms on different layers A powerful method to add reliability in error-prone systems is forward error correction...

Ngày tải lên: 22/06/2014, 23:20

... Giordano, “Crosslayering in mobile ad hoc network design, ” IEEE Computer, vol 37, no 2, pp 48–51, 2004 [16] A Safwat, H Hassanein, and H Mouftah, “Optimal crosslayer designs for energy-efficient wireless ... for wireless ad hoc sensor networks, ” in Proc Autonomous Intelligent Networks and Systems (AINS ’03), Menlo Park, Calif, USA, June–July 2003 Cross- Layer Design of an Energy-Efficient Cluster Formation ... protocols for mobile ad hoc networks, ” IEEE Network, vol 16, no 4, pp 11– 21, 2002 [6] P Chen, B O’Dea, and E Callaway, “Energy efficient system design with optimum transmission range for wireless ad hoc...

Ngày tải lên: 23/06/2014, 00:20

... the effect of packet losses occurring on wireless links Cross- Layer QoS Control for Video over Ad Hoc Networks RTP-H.264 packet video delivery over ad hoc networks Finally, Section provides a summary ... to be used in assessing the performance of wireless ad hoc networks For example, in [4], a “protocol model” is used to assess the asymptotic capacity of an ad hoc wireless network operating in ... and information on the underlying packet-loss Cross- Layer QoS Control for Video over Ad Hoc Networks process, which are obtained at the network layer by the embedded routing algorithm This information...

Ngày tải lên: 23/06/2014, 00:20

... time) per bit in the PHY layer (Equation 8), we proceed to investigate cross- layer design for bandwidth resource management in the following section Cross- layer design for QoS-adaptive resource management ... for broadband wireless access network, in Proc of Int Conf on Advanced Comm Technol 3, 1944–1948 (February 2006) 33 S Shakkottai, TS Rappaport, PC Karlsson, Cross- layer design for wireless networks, ... versus DAR; (d) system throughput versus DAR layer design First, we propose an integrated framework for adaptive QoS provision cross- layer- based design Our major QoS provision mechanism concerns...

Ngày tải lên: 21/06/2014, 00:20

... make available information from the lower layers (MAC and PHY) to the higher layers of the protocol stack (network layer to application layer) Furthermore, MIH is responsible for unifying a variety ... heterogeneous networks information on the status of connected links and the connectivity decision to the lower layers by offering commands to upper layers (e.g., scanning available networks) Therefore, ... IP address Before the handover process begins, the MN retrieves the prefix of the NAR through the IS in advance In order to complete handover process before previous link down, the new IP address...

Ngày tải lên: 21/06/2014, 11:20

... further seen that for both low- and high-loading conditions, BCi should be adapted per user basis in order to obtain high spectral efficiency For UT i, this adaptive value can be formulated as BCi ... at low loading, is observed for SB The CDF of average user throughput per sector (measured in bytes per frame) for and 20 user loading cases is shown in Figure ATBFQ performs better for the EURASIP ... chunks utilized for a higher AF Consequently, RR performs better than SB at lower loading levels For low-to-medium loading with an AF of 0.7, it is observed again that ATBFQ outperforms the reference...

Ngày tải lên: 21/06/2014, 23:20

... Spread Spectrum Ad Hoc Networks with Multiuser Detection” EURASIP Journal on Advances in Signal Processing - Special Issue on Cross- Layer Design for the Physical, MAC, and Link Layer in Wireless ... for wireless packet networks Proc of INFOCOM, Anchorage, AK, USA (2001) 18 A Muqattash, MM Krunz, “CDMA-based MAC Protocol for Wireless Ad Hoc Networks Proc ACM Int Symposium on Mobile Ad Hoc ... “An Adaptive Power Controlled MAC Protocol for Wireless Ad Hoc Networks IEEE Transactions On Wireless Communications 8, 226–233 (2009) 21 P Casari, M Levorato, M Zorzi, “MAC/PHY CrossLayer Design...

Ngày tải lên: 21/06/2014, 03:20

... Transactions on Wireless Communications, vol 7, no 7, pp 2651–2660, 2008 [3] S Sampei and H Harada, “System design issues and performance evaluations for adaptive modulation in new wireless access ... secondary transmitter exploited cross- layer design by employing discrete AMC with adaptive power control at the physical layer, and the truncated-ARQ protocol at the data link layer We determined AMC ... data link layer, under the prescribed packet error rate constraint As per our best knowledge, cross- layer design combining AMC at the physical layer with the ARQ protocol at the data link layer has...

Ngày tải lên: 21/06/2014, 11:20