Communication System Design Using DSP Algorithms: With by Steven A. Tretter

By Steven A. Tretter

Designed for senior electric engineering scholars, this textbook explores the theoretical strategies of electronic sign processing and conversation structures through proposing laboratory experiments utilizing real-time DSP undefined. initially designed for the Texas tools TMS320C6701 evaluate Module or TMS320C6711 DSK, this new edition updates the experiments in keeping with the TMS320C6713 (but can simply be tailored to different DSP boards). every one bankruptcy starts with a presentation of the necessary conception and concludes with directions for appearing experiments to enforce the idea. within the technique of appearing the experiments, scholars achieve event in operating with software program instruments and gear known in industry.

The fundamental concentration of this booklet is on conversation structures. Algorithms which are relatively fitted to DSP implementations are awarded. Chapters 1 and a couple of introduce the software program and instruments. bankruptcy three provides FIR and IIR electronic filters and bankruptcy four investigates the FFT. Chapters four via eight talk about modulators and demodulators for classical analog modulation equipment corresponding to amplitude modulation (AM), double-sideband suppressed-carrier amplitude modulation (DSBSC-AM), unmarried sideband modulation (SSB), and frequency modulation (FM). Chapters nine via sixteen discover electronic communique equipment resulting in the implementation of an entire telephone-line modem. those chapters comprise shift sign in pseudo-random binary series turbines, the RS-232 protocol, pulse amplitude modulation (PAM), quadrature amplitude modulation (QAM) transmitters and receivers, and echo cancellation. equipment for adaptive equalization, service restoration, and image clock monitoring are offered. bankruptcy 17 supplies feedback for extra experiments.

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Several levels of optimization can be used. The compiler automatically schedules parallel use of the ’C6x execution units and inserts NOP’s where necessary to account for delay slots. At the higher optimization levels, the compiler performs software pipelining which is a technique to make loops execute as efficiently as possible by making maximum parallel use of the execution units and pipeline stages. This would be extremely difficult and time consuming by hand. A smart compiler is a necessity to make the complicated hardware architecture of the ’C6000 family easy and productive to use.

The -heap and -stack lines allocate memory for the heap and stack. The number after these commands is the allocated memory size in bytes. lib for unresolved references. This library provides the standard functions the C compiler expects. lib. CCS has been set to know the path to these libraries. They are almost always used by C programs. Including these lines in the linker command file automatically includes them in the linker search path without any further effort on your part. The MEMORY portion of the command file is used to define the physical memory layout.

Interrupts The ’C6000 CPU’s contain a vectored priority interrupt controller. The highest priority interrupt is RESET which is connected to the hardware reset pin and cannot be masked. The next priority interrupt is the non-maskable interrupt (NMI) which is generally used to alert the CPU of a serious hardware problem like a power failure. Then, there are twelve lower priority maskable interrupts INT4–INT15 with INT4 having the highest and INT15 the lowest priority. These maskable interrupts can be selected from up to 32 sources for the ’C6000 family.

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