a next generation smart systems

... estimator for realizable and suboptimal estimation schemes The paper by A Del Coso and C Ibars analyses a pointto-point multiple relay Gaussian channel that uses a decodeand-forward relaying strategy ... performance in MIMO communication systems In this approach, each radio frequency chain is coupled to the antenna through a beamforming vector on a subarray of antenna elements Bounds on capacity ... the ergodic capacity and resorts to numerical results Addressing the robust MIMO signal processing aspect, the paper by P Theofilakos and A Kanatas considers the use of subarrays as a way to improve...

Ngày tải lên: 22/06/2014, 00:20

... Next Generation SONET Systems aggregate T1s and Ethernet traffic across the SONET network and hands them off at the Central Office as a single DS3 (using the Transmux card) to the MSC or as a ... backhaul in 2006 Since SONET and DS3 connections have become cheaper, there are now definite cost-savings associated with aggregating traffic at BTS sites for transport back to the MSC Next Generation ... Site Backhaul Aggregation Transport 9/06 • 103511AE Next Generation SONET Systems with Next Generation SONET Systems Data Network 3G DS1 DS3 TDM Network Ethernet GPS/EDGE SONET OC-3/12 Radio Moble...

Ngày tải lên: 21/12/2013, 08:17

... certain conditions can be blocked by the gateway The WAP approach also has serious implications for e-mail All e-mail transactions to the Internet are relayed by the WAP gateway and are handled as ... and authorization, admission control, charging and data collection, radio resource management, packet bearer creation and maintenance, address mapping and translation, routing and mobility management ... more RAs are managed by a SSGN The UTRAN Registration Area (URA) are smaller than the RA, and cells are the smallest unit of location Typically, a URA contains the cells controlled by a single...

Ngày tải lên: 20/01/2014, 06:20

... The major difference between a traditional single-carrier CDMA and MC-CDMA systems lies in the fact that the latter can take the advantage of transmitting multiple data streams in parallel via different ... Population in 2005 Penetration rate (%) World percentage (%) United States China Japan Germany India United Kingdom South Korea Italy France Brazil Russia Canada Spain Indonesia Mexico Taiwan Australia ... Rician fading Assume again that the signal sent from a transmitter is a complex signal with its real and imaginary parts, which is the case with most quadrature modulated carrier signals, such as...

Ngày tải lên: 03/06/2014, 01:05

... being able to play with them on weekends and holidays Mohsen Guizani would like to thank his wife Saida and his children, Nadra, Fatma, Maher, Zainab, Sara, and Safa for their understanding and patience ... The major difference between a traditional single-carrier CDMA and MC-CDMA systems lies in the fact that the latter can take the advantage of transmitting multiple data streams in parallel via different ... spreading and carrier modulation schemes13 , and so on In particular, we introduce a new CDMA code design approach, namely, the Real Environment Adaptation Linearization (REAL) approach, as an effort...

Ngày tải lên: 27/06/2014, 14:20

... being able to play with them on weekends and holidays Mohsen Guizani would like to thank his wife Saida and his children, Nadra, Fatma, Maher, Zainab, Sara, and Safa for their understanding and patience ... The major difference between a traditional single-carrier CDMA and MC-CDMA systems lies in the fact that the latter can take the advantage of transmitting multiple data streams in parallel via different ... spreading and carrier modulation schemes13 , and so on In particular, we introduce a new CDMA code design approach, namely, the Real Environment Adaptation Linearization (REAL) approach, as an effort...

Ngày tải lên: 27/06/2014, 14:20

... being able to play with them on weekends and holidays Mohsen Guizani would like to thank his wife Saida and his children, Nadra, Fatma, Maher, Zainab, Sara, and Safa for their understanding and patience ... The major difference between a traditional single-carrier CDMA and MC-CDMA systems lies in the fact that the latter can take the advantage of transmitting multiple data streams in parallel via different ... spreading and carrier modulation schemes13 , and so on In particular, we introduce a new CDMA code design approach, namely, the Real Environment Adaptation Linearization (REAL) approach, as an effort...

Ngày tải lên: 27/06/2014, 14:20

... certain conditions can be blocked by the gateway The WAP approach also has serious implications for e-mail All e-mail transactions to the Internet are relayed by the WAP gateway and are handled as ... MSC GMSC C Location Area Routing Area UTRAN Registration Area RNC HSS/ HLR Gs UTRAN Registration Area Optional RNC Gc Routing Area UTRAN Registration Area RNC UTRAN Registration Area IuPS SGSN ... user’s data traffic, including functions such as initial authentication and authorization, admission control, charging and data collection, radio resource management, packet bearer creation and maintenance,...

Ngày tải lên: 27/06/2014, 14:20

... external jamming For instance, if a maximal 10-MHz bandwidth is available, the PG possible is also limited by that 10 MHz Several practical approaches are available in choosing the proper bandwidth ... such as MAI and MI FUNDAMENTALS OF WIRELESS COMMUNICATIONS Data Source Spreading Modulation Carrier Modulation Data Source Spreading Modulation Carrier Modulation Data Source K Spreading Modulation ... of a so called rate-matching algorithm, as specified in the standards Thus, possible data rates can also be made variable only in multiples of two For instance, if a user requires a data rate...

Ngày tải lên: 09/08/2014, 19:22

... Transport layer Data Network layer Data DT DH Application layer Session layer Data TH NH Data PH SH Data Receiver Data Data link layer Bit stream Physical layer Actual data transmisssion path Figure ... widespread coverage of the AMPS networks along with some advantages of digital systems in the areas where TDMA networks are available On Next Generation Wireless Systems and Networks Hsiao-Hwa Chen and ... portions are included, that is, packet header, user data, and packet trailer FUNDAMENTALS OF WIRELESS COMMUNICATIONS Packet header Flag Address Control info 113 Data Packet trailer User data Frame...

Ngày tải lên: 09/08/2014, 19:22

... lic Australia No coverage obligations Austria CDMA2000 & WCDMA WCDMA Belgium WCDMA Brazil CDMA2000 & WCDMA CDMA2000 & WCDMA NA NA Denmark CDMA2000 & WCDMA WCDMA Finland WCDMA France WCDMA (+1 ... telecommunications standards bodies, which are known as Organizational Partners The current organizational partners are ARIB (Japan) and TTC (Japan), CCSA (China), ETSI (Europe), T1 (United States of America) ... Channel, and a Data Channel The Traffic MAC Channel contains a Reverse Rate Indicator (RRI) Channel and a DRC Channel The Access Channel is used by the AT to initiate communication with the Access...

Ngày tải lên: 09/08/2014, 19:22

... “State 3” STA is both authenticated and associated A State STA can send Class frames, State STAs can send Class and frames, and State STAs can send any type of frame The states are summarized in ... fixed beam pattern from a traditional antenna, the smart antenna can dynamically generate multiple beam patterns, each of which is pointed to a particular mobile; such beam patterns can adapt to ... [457] The attacker picks as his target a STA that is already associated with a legitimate AP, and sets up a false AP with the same SSID and MAC address as a genuine AP on the network within range...

Ngày tải lên: 09/08/2014, 19:22

... or QAM is typically employed An OFDM system takes a data stream and splits it into M parallel data streams, each at a rate 1/M of the original rate Each stream is then mapped to a tone at a unique ... entails Hardware and software updates can easily and wirelessly be carried out by users or operators Manufacturers can also take advantage of SDR as large volumes of terminals with identical hardware ... traditional DS-CDMA system, and thus a substantial gain in bandwidth efficiency can be achieved Unfortunately, all unitary codes, such as Gold, Kasami, Walsh-Hadamard, OVSF codes, and so on, are...

Ngày tải lên: 09/08/2014, 19:22

... analytical treatment of code-dependent analysis of an STBC-CDMA system under MAI and flat Rayleigh fading The comparison is also made among the STBC-CDMA systems using both analysis and simulation ... the capacity or data transmission rates at no extra bandwidth cost, which is an extremely attractive feature To implement spatial multiplexing in a MIMO system, multiple data streams are transmitted ... Tc ) and Rp (−(1 − γk )Tc ) MAI statistics in a flat fading channel If K is sufficiently large, we can approximate the multiple access interference term, that is, I , as a Gaussian random variable...

Ngày tải lên: 09/08/2014, 19:22

... stations associated with an AP cannot exceed the maximum limit that the AP sets When a WLAN station associates with an AP, the station indicates its transmit power capability The AP uses this data about ... parameters used in the above DFS algorithm can be explained as follows: To obtain “radar antenna gain” (GRadar ), we need to know the azimuth and elevation antenna pattern models for the radar ... codes with variable numbers of transmitter antennae, from up to 32 antennae It illustrates that a great advantage can be obtained by using a relatively large number of transmitter antennae The results...

Ngày tải lên: 09/08/2014, 19:22

... in same as well as different bands, in both UL and DL, and in both adjacent and nonadjacent channel arrangements A “Radio Band Resource” is defined as an all spectrum available to an operator ... if a a a a a a separate separate separate separate separate separate PCH exists PCH does not exist MCH does not exist MCH exists MCCH exist MCCH and MCH exist E-UTRAN: 3GPP’S EVOLUTIONAL PATH ... scheduling and link adaptation It was suggested that orthogonal in-band pilot (IBP) symbol patterns are needed in the following cases: (1) If a UE transmits on two antennae (Antenna A and Antenna B) as...

Ngày tải lên: 09/08/2014, 19:22

... H Muramatsu M Harada, T Yamazato, H Okada, and M Katayama, Effect of Nonlinear Amplifiers of Transmitters in Multicarrier CDMA Systems, IEICE Trans Fundam., vol J85 -A, no 3, pp 340;V48, Mar 2002 ... hopper analysis, Magnavox Research Laboratories, STN-29, August 1966 [273] A Kaplan, Detection and analysis of frequency hopping radar signals, Sylvania Elect Syst., W.D.L Mountain View, California ... S Suwa, H Atarashi, and M Sawahashi, Performance comparison between MC/DS-CDMA and MCCDMA for reverse link broadband packet wireless access, Proceedings of VTC- 2002 Fall, Vancouver, Canada, pp...

Ngày tải lên: 09/08/2014, 19:22

... certain conditions can be blocked by the gateway The WAP approach also has serious implications for e-mail All e-mail transactions to the Internet are relayed by the WAP gateway and are handled as ... Toshiro Kawahara, James Kempf, Khosrow Lashkari, Ged Powell, Zulfikar Ramzan, Manuel Roman, Muhammad Mukarram Bin Tariq, Fujio Watanabe, Dong Zhou, 181 Metro Drive, Suite 300, San Jose, California 95110, ... 12.3.1 Wallach et al.: Capabilities and Namespaces 12.3.2 Erlingsson and Schneider: Security Automata 12.3.3 Evans and Twyman: Abstract Operating Systems 12.3.4 Pandey and Hashii:...

Ngày tải lên: 14/08/2014, 09:21

... Implementation Mandatory JavaPhone API Implementation Personal Java API Optional PersonalJava API Implementation Mandatory PersonalJava API Implementation Figure 2.8 MExE API for the Personal Java and ... moment, assume that a public API is an API made available to all third parties (in a manner similar to i-mode) It may contain standard open APIs (e.g., 3GPP OSA or Parlay, or their successors) as a ... and authorization, admission control, charging and data collection, radio resource management, packet bearer creation and maintenance, address mapping and translation, routing and mobility management...

Ngày tải lên: 14/08/2014, 09:21

... to an adequate AP The AP periodically broadcasts the operation information of the BSS in what is called a beacon frame The STA listens to all beacons it can hear and then selects an adequate AP ... of packetized data that are bursty in nature and require high bit rates HSDPA is standardized in 3GPP to provide a packet-based data service in a W-CDMA downlink with a data-transmission rate ... that is robust against MI on a broadband channel is therefore essential to achieve high-quality transmissions A multicarrier scheme is also essential for broadband transmissions (Hara and Prasad...

Ngày tải lên: 14/08/2014, 09:21