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

By Steven A. Tretter

Designed for senior electric engineering scholars, this textbook explores the theoretical ideas of electronic sign processing and verbal exchange 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 according to the TMS320C6713 (but can simply be tailored to different DSP boards). every one bankruptcy starts with a presentation of the necessary idea and concludes with directions for acting experiments to enforce the idea. within the strategy of appearing the experiments, scholars achieve event in operating with software program instruments and gear primary in industry.

The fundamental concentration of this publication is on conversation platforms. Algorithms which are quite fitted to DSP implementations are provided. 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 speak about modulators and demodulators for classical analog modulation equipment equivalent 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 conversation tools resulting in the implementation of a whole telephone-line modem. those chapters contain shift sign up 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, provider restoration, and image clock monitoring are awarded. bankruptcy 17 provides feedback for extra experiments.

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Extra info for Communication System Design Using DSP Algorithms: With Laboratory Experiments for the TMS320C6713 DSK (Information Technology: Transmission, Processing and Storage)

Example text

The address is sent to memory in the PS (program address send) phase and it is read in the PW (program access ready wait) phase. Finally, the CPU receives the fetch packet in the PR (program fetch packet receive) phase. During the DP (instruction dispatch) phase of the decode stage, the fetch packet of eight instructions is partitioned into execute packets and the instructions are assigned to functional units. Then in the DC (instruction decode) phase, the source registers, destination registers, and required data paths are decoded for instruction execution by the functional units.

C. 1 Getting Started with a Simple Audio Loop Through Program 33 /* to use a single phase frame consisting of one 32-bit word */ /* per frame. Words are sent to the codec by using the BSL */ /* function DSK6713_AIC23_write() and read from the codec by */ /* using the function DSK6713_AIC23_read(). h and the TLV320AIC23 Stereo Audio CODEC Data Manual */ for a detailed description of the bits in each of the 10 AIC23 control */ registers in the following configuration structure. */ DSK6713_AIC23_Config config = { \ 0x0017, /* 0 DSK6713_AIC23_LEFTINVOL 0x0017, /* 1 DSK6713_AIC23_RIGHTINVOL 0x00d8, /* 2 DSK6713_AIC23_LEFTHPVOL 0x00d8, /* 3 DSK6713_AIC23_RIGHTHPVOL 0x0011, /* 4 DSK6713_AIC23_ANAPATH 0x0000, /* 5 DSK6713_AIC23_DIGPATH 0x0000, /* 6 DSK6713_AIC23_POWERDOWN 0x0043, /* 7 DSK6713_AIC23_DIGIF 0x0081, /* 8 DSK6713_AIC23_SAMPLERATE 0x0001 /* 9 DSK6713_AIC23_DIGACT }; Left line input channel volume */ \ Right line input channel volume */\ Left channel headphone volume */ \ Right channel headphone volume */ \ Analog audio path control */ \ Digital audio path control */ \ Power down control */ \ Digital audio interface format */ \ Sample rate control (48 kHz) */ \ Digital interface activation */ \ /***********************************************************/ /* Main program: Replace with your code */ /***********************************************************/ void main(void){ DSK6713_AIC23_CodecHandle hCodec; Uint32 sample_pair = 0; /* Initialize the interrupt system */ 34 Learning to Use the Hardware and Software Tools intr_reset(); /* dsk6713_init() must be called before other BSL functions */ DSK6713_init(); /* In the BSL library */ /* Start the codec */ hCodec = DSK6713_AIC23_openCodec(0, &config); /* Change the sampling rate to 16 kHz */ DSK6713_AIC23_setFreq(hCodec, DSK6713_AIC23_FREQ_16KHZ); /* Read left and right channel samples from the ADC and loop */ /* them back out to the DAC.

The SECTIONS portion of the linker command file tells the linker how to place sections into defined memory regions. cio section. data section. data section. There are many more options for linker command files that allow complex mappings of programs into physical memory. 5] for complete details. cmd */ /* This linker command file can be used as the starting */ /* point for linking programs for the TMS320C6713 DSK. */ /* */ /* This CMD file assumes everything fits into internal RAM. */ /* If that’s not true, map some sections to the external */ /* SDRAM.

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