Digital Demodulator of the Quadrature Amplitude Modulation Signals
نویسندگان
چکیده
منابع مشابه
Quadrature Amplitude Modulation
The simplest type of digital modulation involves transmitting a sequence of waveforms (“symbols”) si(t) of equal durationT where eachwaveform is chosen independently from a set of M. This allows us to transmit up to b = log2(M) bits per symbol. A common sets of such symbols are those where the real and imaginary parts of the complex baseband signal are each modulated in amplitude. This known as...
متن کاملDigital Quadrature Amplitude Modulation: Optimal Detection in Receiver Noise
where p(t) is a (typically real valued) pulse shape, and the ck are QAM symbols drawn from a finite collection of complex numbers called a constellation based on input bits to be communicated over the channel. Some example QAM constellations include 4-QAM (a.k.a QPSK){±1± j}, 16-QAM {±a± jb} with a, b ∈ {1, 3}, 64-QAM {±a + jb} with a, b ∈ {1, 3, 5, 7}, and 256-QAM {±a ± jb} with a, b ∈ {1, 3, ...
متن کاملQuadrature Amplitude Modulated Digital Radio Transmission Modeling and Simulation
Computer aided design and computer aided modeling tools are becoming increasingly important in the design and performance evaluation of communication systems. In this work, we report on the computer simulation modeling study of terrestrial digital microwave radio transmission, using Block Oriented System Simulator package (BOSS). The work concentrates on semi-analytical error rate evaluation in...
متن کاملQuadrature Amplitude Modulation : A simulation study
This report details our implementation and observations of a 16QAM and 4-QAM system. The modem was implemented in software using Simulink. Error bit rates as a function of SNR were studied using Monte Carlo estimation techniques.
متن کاملOn the Probability of Error for Triangular Quadrature Amplitude Modulation
We compute the exact value of error probability per symbol (SER) for triangular quadrature amplitude modulation (TQAM) scheme in the case of AWGN channel. Also, we derive an upper and a lower bounds for SER in this case. The results , as well as the simulations, show that the difference between the exact value of SER and the upper bound bound is constant. Hence the simple upper bound can be use...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Measurement Science Review
سال: 2018
ISSN: 1335-8871
DOI: 10.1515/msr-2018-0032