1 1 1 0 0 1 1 -- 8-bit number 0 0 0 0 1 0 0 0 -- data for inserting a 1 at bit 3 in .NET

Insert QR Code ISO/IEC18004 in .NET 1 1 1 0 0 1 1 -- 8-bit number 0 0 0 0 1 0 0 0 -- data for inserting a 1 at bit 3

Figure 9.31 Average BER of BDPSK versus average SNR of the rst branch for equal average branch SNRs ( 1 = 2 ) and for various values of the correlation coef cient [(a) = 0.9, (b) = 0.7, (c) = 0.5, (d) = 0].

Discrete frequency. Signals X (k ) in the frequency domain occur at discrete values of frequency (k ) from 0 to N 1. Discrete time. Signals x (n) in the time domain occur at discrete values of time (n) from 0 to N 1. Digital signal processing (DSP). Signal processing in which signal amplitudes are also discrete (quantized). Even symmetry. The two sides, X (k ) and X (N k ), of a phasor spectrum have the same phase. Expected value. The sum of products of a signal amplitude at time T and the probability of occurrence of the signal at time T [Eq. (6-1)]. Also known as the rst moment. Fast Fourier transform (FFT). A high-speed algorithm for the DFT. Flow graph. A graphical method of tracing the ow of signals within a network. Fourier, Joseph. French mathematician who originated the trigonometric series method of analysis and design of mathematical and physical phenomena. Frequency domain. Signals are classi ed according to their occurrence in frequency (f ) continuous or discrete X (k ). Frequency scaling. A sequence of frequency values have a certain sequential relationship from low end to high end. The maximum frequency minus the minimum frequency, divided by the number of frequencies, is the frequency scale factor. Gaussian noise. Random electrical noise, perhaps thermally generated noise, that has the Gaussian (normal) amplitude probability density function. Hermitian symmetry. A spectral property such that positive- and negative-frequency values are complex conjugates. The sine and cosinewave phasors are Hermitian Hilbert transform. In RF work, an algorithm that modi es a two-sided phasor spectrum so that positive-frequency phasors are phase shifted 90 and negative-frequency phasors are phase shifted +90 . This idea is useful in many applications, especially in SSB. Integer. A collection of whole numbers: such as (1, 2, 3, . . .).

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Patterns that can be used in combination with this pattern include the following: Business delegate Session facade Value-object assembler The business-delegate and session-facade patterns are cataloged in this chapter. The value-object-assembler pattern is discussed under the Related patterns section of the value object coverage. The half-object-plus-protocol is the next pattern that we are going to catalog. As the name suggests, this pattern acts as a half-object and half- protocol mechanism.

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This chapter covered the basics for working with the Linux lesystem from a shell prompt. It started out by discussing the bash shell and showed you how to interact with the shell. The command line interface (CLI) uses a prompt string to indicate when it s ready for you to enter commands. You can customize the prompt string to display useful information about your system, your logon ID, and even dates and times. The bash shell provides a wealth of utilities you can use to create and manipulate les. Before you start playing with les, it s a good idea to understand how Linux stores them. This chapter discussed the basics of the Linux virtual directory and showed how Linux references store media devices. After describing the Linux lesystem, the chapter walked you through using the cd command to move around the virtual directory. After showing you how to get to a directory, the chapter demonstrated how to use the ls command to list the les and subdirectories. There are lots of parameters that customize the output of the ls command. You can obtain information on les and directories just by using the ls command. The touch command is useful for creating empty les and for changing the access or modi cation times on an existing le. The chapter also discussed using the cp command to copy existing les from one location to another. It walked you through the process of linking les instead of copying them, providing an easy way to have the same le in two locations without making a separate copy. The cp command does this, as does the ln command. Next, you learned how to rename les (called moving) in Linux using the mv command, and saw how to delete les (called removing) using the rm command. It also showed how to perform the same tasks with directories, using the mkdir and rmdir commands. Finally, the chapter closed with a discussion on viewing the contents of les. The cat, more, and less commands provide easy methods for viewing the entire contents of a le, while the tail and head commands are great for peeking inside a le to just see a small portion of it. The next chapter continues the discussion on bash shell commands. We ll take a look at more advanced administrator commands that ll come in handy as you administer your Linux system.

Sources, 1998, 73, 182 192. F. Yoshiba, N. Ono, Y. Izaki, et al., Journal of Power Sources, 1998, 71, 328 336. M. D. Lukas, K. Y. Lee, H. GhezelAyagh, Control Engineering Practice, 2002, 10, 197 206. H.-K. Park, Y.-R. Lee, M.-H. Kim, et al., Journal of Power Sources, 2002, 104, 140 147. R. Fellows, Journal of Power Sources, 1998, 71, 281 287.