Wireless Network Performance Enhancement via Directional Antennas, 2016

اختصاصی از فی بوو Wireless Network Performance Enhancement via Directional Antennas, 2016 دانلود با لینک مستقیم و پر سرعت .

512 صفحه

Wireless Network Performance Enhancement via Directional Antennas, Models, Protocols and Systems 2016

edited by John. Matyjas

CRC Press

سرفصلها

Section I DIRECTION AL ANTENN AS
1Introduction: Switched/Steered Directional Antennas for Networking.......................3
TAN NGO, MURALI TUMMALA, AND JOHN McEACHEN
 Design and Optimization of Wideband Log-Periodic Dipole Arrays under
Requirements for High Gain, High Front-to-Back Ratio, Optimal Gain
Flatness, and Low Side Lobe Level: The Application of Invasive Weed
Optimization...............................................................................................................21
ZAHARIAS D. ZAHARIS, PAVLOS I. LAZARIDIS, CHRISTOS SKEBERIS,
GEORGE MASTORAKIS, CONSTANDINOS X. MAVROMOUSTAKIS,
EVANGELOS PALLIS, DIMITRIOS I. STRATAKIS, AND THOMAS D. XENOS
Section II DIRECTION AL MAC
 Discovery Strategies for a Directional Wake-Up Radio in Mobile Networks.............65
WEN-CHAN SHIH, RAJA JURDAK, DAVID ABBOTT, PAI H. CHOU,
AND WEN-TSUEN CHEN
Medium Access Control for Wireless Networks with Directional Antennas..............77
T. OWENS WALKER III, MURALI TUMMALA, AND JOHN McEACHEN
IEEE 802.11ad Wireless Local Area Network and Its MAC Performance................101
DAVID TUNG CHONG WONG, FRANCOIS CHIN, XIAOMING PENG,
AND QIAN CHEN
Section III MILLIMETE R WAVE
MAC Layer Protocols for Wireless Networks with Directional Antennas................131
MUHAMMAD IRFAN RAFIQUE
Millimeter-Wave Wireless Networks: A Medium Access Control Perspective..........155
SHIWEN MAO AND THEODORE (TED) S. RAPPAPORT
Directional MAC Protocols for 60 GHz Millimeter Wave WLANs..........................169
KISHOR CHANDRA AND R. VENKATESHA PRASAD
Performance Improvements of mm-Wave Wireless Personal Area Networks
Using Beamforming and Beamswitching..................................................................189
SEOKHYUN YOON
Applications of Directional Networking in Military Systems...................................207
LATHA KANT, RITU CHADHA, AND JOHN LEE
Section IV MIMO
Design and Implementation of Directional Antenna-Based LOS–MIMO
System for Gbps Wireless Backhaul..........................................................................229
XIANG CHEN, XIUJUN ZHANG, SHIDONG ZHOU, MING ZHAO, AND JING WANG
MIMO and Cooperation in Cognitive Radio-Based Wireless Networks: Stateof-
the-Art and Perspectives.......................................................................................249
ABDELAALI CHAOUB
Section V ADVANCED TO PICS
Directional Antennas and Beamforming for Cognitive Radio-Based Wireless
Networks...................................................................................................................273
ABDELAALI CHAOUB AND ELHASSANE IBN-ELHAJ
Multicast Algorithm Design for Energy-Constrained Multihop Wireless
Networks with Directional Antennas........................................................................293
YI SHI, Y. THOMAS HOU, HANIF D. SHERALI, AND WENJING LOU
Connectivity of Large-Scale Wireless Networks with Directional Antennas...........315
CHI-KIN CHAU, RICHARD J. GIBBENS, AND DON TOWSLEY
Bounds on the Lifetime of Wireless Sensor Networks with Lossy Links
and Directional Antennas.........................................................................................329
JUAN M. ALONSO, AMANDA NORDHAMN, SIMON OLOFSSON,
AND THIEMO VOIGT
Section VI APPLICATIONS
Utilization of Directional Antennas in Flying Ad Hoc Networks: Challenges
and Design Guidelines..............................................................................................365
ŞAMIL TEMEL AND İLKER BEKMEZCI
Military Networks Enabled by Directional Antennas...............................................381
JERRY SONNENBERG, KEITH OLDS, EMIL SVATIK, AND DAVE CHESTER
Military Applications of Directional Mesh Networking...........................................393
TODD MCINTYRE, MARC J. RUSSON, STEPHEN M. DUDLEY, AND VICTOR WELLS
Collaborative and Opportunistic Content Dissemination via Directional
Antennas....................................................................................................................435
YONG LI, WEI FENG, LI SU, XIANG CHEN, AND DEPENG JIN
The Evolution of Directional Networking Systems Architecture..............................465
MATTHEW SHERMAN

دانلود کتاب Hacking Exposed Wireless: Wireless Security Secrets & Colutions

اختصاصی از فی بوو دانلود کتاب Hacking Exposed Wireless: Wireless Security Secrets & Colutions دانلود با لینک مستقیم و پر سرعت .

دانلود کتاب آموزش نفوذ و جلوگیری از نفوذ به شبکه های وایرلس
شرح کامل روش های نفوذ و جلوگیری

کتابی کاملا عملی و تست شده 

امیدواریم از این کتاب در جهت ایمن سازی شبکه های وایرلس خود استفاده کنید.

تعداد صفحه: 513

قیمت : 20 هزار تومان

قیمت در آمازون : 39.58 $

برای دیدن مشخصات کتاب و همچنین دیدن قیمت واقعی در سایت آمازون بر روی این متن کلیک کنید.

ترجمه ی مقاله ی Unitary Differential Space-Time-Frequency Codes for MB-OFDM UWB Wireless Communications

اختصاصی از فی بوو ترجمه ی مقاله ی Unitary Differential Space-Time-Frequency Codes for MB-OFDM UWB Wireless Communications دانلود با لینک مستقیم و پر سرعت .

 کدهای تفاضلی واحد فضا-زمان-فرکانس برای ارتباطات بیسیم MB-OFDM UWB

چکیده

        در یک سیستم  چند ورودی چند خروجی (MIMO)، تسهیم متعامدِ تقسیمِ فرکانس (MB-OFDM)، فوقِ پهن باند (UWB)، تشخیص همدوس، احتیاج به انتقال تعداد بسیار زیادی از نمادها برای تخمین کانال دارد، که موجب کاهش بهره وری پهنای باند می شود. این مقاله برای نخستین بار، کدهای تفاضلیِ واحدِ فضا- زمان- فرکانس (DSTFCs) را برای ارتباطات MB-OFDM UWB پیشنهاد می کند، که منجر به افزایشِ بهره وری پهنای باندِ سیستم می شود، چرا که به اطلاعات وضعیت کانال (CSI)، نیازی نیست. سیستمِ پیشنهادی، هنگامی مفید واقع می شود که CSI در گیرنده در دسترس نباشد، همانند زمانی که انتقالِ نمادهای متعدد تخمین کانال، غیرعملی یا غیراقتصادی است. سپس الگوریتم های رمزگذاری و رمزگشاییِ DSTFCs پیشنهادی، برای هر دو طرح مدولاسیونِ پوش ثابت بدست آمده اند، از جمله PSK (کلیدزنی شیفت فاز) و 4QAM (مدولاسیون یک چهارمِ دامنه)، و طرح مدولاسیون چندبعدی، مانند DCM (مدولاسیون دو حامله). همچنین در این مقاله برای اولین بار، کیفیتِ مرتبه ی تنوع و گوناگونیِ یک سیستم DSTFC MB-OFDM مشخص می شود. نتایج شبیه سازی نشان می دهند که استفاده از DSTFCs به طور قابل توجهی، قادر به بهبود کارایی خطای بیتیِ سیستم تفاضلی MB-OFDM معمول (بدون MIMO) است، و حتی  می تواند کارایی خطای بیتیِ به مراتب بهتری را نیز در نسبت های سیگنال به نویز بالا، نسبت به سیستم همدوس MBOFDM معمول (بدون MIMO) ارائه دهد.
کلید واژه ها- UWB، MB-OFDM، DSTFC، STFC، MIMO.

Abstract

In a multiple-input multiple-output (MIMO), multiband orthogonal frequency division multiplexing (MB-OFDM) ultra-wideband (UWB) system, coherent detection requires the transmission of a large number of symbols for channel estimation, thus reducing the bandwidth efficiency. For the first time, this paper proposes unitary differential space-time-frequency codes (DSTFCs) for MB-OFDM UWB communications, which increase the system bandwidth efficiency because no channel state information (CSI) is required. The proposed system would be useful when CSI is unavailable at the receiver, such as when the transmission of multiple channel estimation symbols is impractical or uneconomical. The coding and decoding algorithms for the proposed DSTFCs are then derived for both constant envelope modulation scheme, such as PSK (phase shift keying) and 4QAM (quadrature amplitude modulation), and multi-dimensional modulation scheme, such as DCM (dual carrier modulation). The paper also quantifies for the first time the diversity order of a DSTFC MB-OFDM system. Simulation results show that the application of DSTFCs can significantly improve the bit error performance of conventional differential MB-OFDM system (without MIMO), and even provide much better bit error performance than the conventional coherent MBOFDM system (without MIMO) at high signal-to-noise ratios.

توضیحات تکمیلی در مورد این اثر:

تعداد صفحات مقاله ی انگلیسی: 15 و تعداد صفحات ترجمه ی مقاله با کیفیت بسیار خوب: 34

نام ژورنال و سال انتشار: IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2013

فایل های ضمیمه: اصل مقاله ی انگلیسی + فایل Word ترجمه ی فارسی

منبع: IEEE Xplore

دانلود مقاله Performance of a Hybrid ARQ Scheme in CDMA Wireless Sensor Network - انتشار 2011

اختصاصی از فی بوو دانلود مقاله Performance of a Hybrid ARQ Scheme in CDMA Wireless Sensor Network - انتشار 2011 دانلود با لینک مستقیم و پر سرعت .

International Journal of Energy, Information and Communications
Vol. 2, Issue 3, August 2011

U. Datta
Member, IEEE, Dept. of E& I, CSIR-CMERI, Durgapur, India
[e-mail]
D. Bharath Kumar
Dept.of ECE, N.I.T Durgapur, Durgapur, India
[e-mail]
Amit Kumar Ball
Dept. of E&I, CSIR-CMERI, Durgapur, India
[e-mail]
S. Kundu
Member, IEEE, Dept.of ECE, N.I.T Durgapur, Durgapur, India
[e-mail]

Abstract
The paper evaluates the energy level performance of CDMA wireless sensor networks (WSN) with a new error control strategy using BCH coding following hybrid ARQ. The performance of the proposed scheme is compared with simple ARQ using CRC and with an existing HARQ-I employing BCH code when applied to CDMA based WSN in terms of energy consumption for successful transmission of fixed length packet. Two kinds of interference namely multiple access interference (MAI) and node interference (NI) are considered. Packet error rate (PER) and energy required for successful delivery of information to a sink considering single hop communication is estimated. The effects of several network parameters such as node density, correlation amongst interferers, power control error (pce) on PER, average number of retransmissions, energy consumption for successful reception of a packet at sink are investigated and energy efficiency in a single hop transmission are estimated and compared for different error control strategies. Analytical results are verified through simulations.
Keywords: HARQ, BCH coding, Wireless CDMA Sensor Network (WCSN), Correlation.

دانلود مقاله PPR: Partial Packet Recovery for Wireless Networks

اختصاصی از فی بوو دانلود مقاله PPR: Partial Packet Recovery for Wireless Networks دانلود با لینک مستقیم و پر سرعت .

PPR: Partial Packet Recovery for Wireless Networks
Kyle Jamieson and Hari Balakrishnan
MIT Computer Science and Artificial Intelligence Lab
{jamieson, hari}@csail.mit.edu

Abstract
Bit errors occur over wireless channels when the signal isn’t strong enough to
overcome the effects of interference and noise. Current wireless protocols may use
forward error correction (FEC) to correct for some (small) number of bit errors,
but generally retransmit the whole packet if the FEC is insufficient. We observe
that current wireless mesh network protocols retransmit a number of packets and
that most of these retransmissions end up sending bits that have already been received
multiple times, wasting network capacity. To overcome this inefficiency, we
develop, implement, and evaluate a partial packet recovery (PPR) system.
PPR incorporates three new ideas: (1) SoftPHY, an expanded physical layer
(PHY) interface to provide hints to the higher layers about how “close” the actual
received symbol was to the one decoded, (2) a postamble scheme to recover data
even when a packet’s preamble is corrupted and not decodable at the receiver,
and (3) PP-ARQ, an asynchronous link-layer retransmission protocol that allows a
receiver to compactly encode and request for retransmission only those portions of
a packet that are likely in error.
Our experimental results from a 27-node 802.15.4 testbed that includes Telos
motes with 2.4 GHz Chipcon radios and GNU Radio nodes implementing the
Zigbee standard (802.15.4) show that PPR increases the frame delivery rate by a
factor of 2× under moderate load, and 7× under heavy load when many links have
marginal quality.