Download Coded-Modulation Techniques for Fading Channels by S. Hamidreza Jamali, Tho Le-Ngoc (auth.) PDF

By S. Hamidreza Jamali, Tho Le-Ngoc (auth.)

Coded-Modulation suggestions for Fading Channels offers the reader with a legitimate heritage for the appliance of bandwidth-efficient coded-modulation options in fading channels. The ebook systematically provides fresh advancements within the box, which has grown swiftly in recent times, and offers a great body of reference for additional examine during this zone.
in past times decade there was a proliferation of study within the quarter of bandwidth-efficient coded-modulation innovations. the first good thing about those schemes over modulation schemes utilising conventional errors correcting codes is their skill to enhance the functionality of the conversation method with out bandwidth enlargement. This estate makes them an appropriate selection for channels that are restricted in either strength and bandwidth. a regular instance of such channels is a cellular satellite tv for pc channel, the place it's wanted to accommodate plenty of clients in a given bandwidth with an influence that's limited via the actual measurement of the satellite tv for pc and via the vehicle's antenna.
Coded-Modulation strategies for Fading Channels is a superb reference for researchers and working towards engineers, and should be used as a textual content for complex classes at the topic.

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The transmitted waveforms are subjected to channel noise and distortion. In an additive Gaussian noise channel, only Gaussian-distributed white noise is added, while in a multiplicative fading channel, the amplitude and phase of the transmitted waveforms are distorted as well. At the receiver the demodulator produces the corrupted vector r of N components. The demodulator can quantize each received component into q levels. In such a case, we say that the demodulator makes a hard decision. As an alternative, the demodulator may make Q-ary decision, where Q > q.

4: Decision regions for a signal set with 8 signals. 2 is the Euclidean distance between the received signal r and the transmitted signal Si. Thus, in the AWGN channel the decision region Ai for the signal point Si is the set of all points that are closer to Si than to any other signal point of the signal set. 4 as an example. 4 PERFORMANCE OF SOME MODULATION TECHNIQUES IN AN AWGN CHANNEL In this section we evaluate the performance of the coherent detection of some known signaling techniques in an AWGN channel.

To compute the probability of error Pe we have Pe 1 = '2Pel3o + 1 '2Pelsl Pel so ' where Pe l3i , i = 0,1, is the probability of error when Si, i = 0,1, is transmitted. 6: Signal space representation of BFSK signals. 9). ,jE. in the above equation yields the probability of error for BPSK P= Q( J2ENo e s ). 14) Binary Frequency-Shift Keying (BFSK) Binary frequency shift keying (BFSK) is a special case of orthogonal signaling. In BFSK signaling the two waveforms so(t) and 051 (t) are two sine functions with frequencies fo and It, respectively.

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