Improving energy efficiency of partial response signals by using coded modulation

Gorlov, Anton; Gelgor, Aleksandr; Popov, Evgenii

doi:10.1109/blackseacom.2015.7185086

Cited by 5 publications

(2 citation statements)

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“…6,7 This transmission scheme could achieve better data rate and bandwidth efficiency, but the penalty is the loss of energy efficiency since the interference provided by its neighboring pulses. 8 Through partial response signal transmission, intentional ISI occurs at the receiving end, so demodulation requires complex detection sequences. Turbo equalization is an iterative equalization and decoding technology, which process the equalization and decoding several times for each received signal.…”

Section: Introductionmentioning

confidence: 99%

“…Partial response signaling is a promising technique that enhanced spectral efficiency by introducing intentional ISI; however, another approach called faster‐than‐Nyquist (FTN) signaling can be viewed as the special case of PR signaling which employs realizable bandlimited pulses with wider‐than‐Nyquist bandwidth 6,7 . This transmission scheme could achieve better data rate and bandwidth efficiency, but the penalty is the loss of energy efficiency since the interference provided by its neighboring pulses 8 …”

Section: Introductionmentioning

confidence: 99%

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Capacity and turbo equalization for truncated root‐raise cosine‐pulsed modulation systems in the presence of timing offset

Chiang

Hung

Chung

2022

Int J Communication

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Summary In communication systems, in order to increase spectrum efficiency, pulses with limited bandwidth that meet the Nyquist zero intersymbol interference criterion are usually used for transmission. However, the truncated pulse is conducive to the realization of the partial response signal transmission system. The actual method is to cut the finite bandwidth pulse into a finite and sufficient length in the time domain. This will make the overall impulse response no longer meet the Nyquist criterion and at the receiving end will produce intentional intersymbol interference, so demodulation requires complex sequence detection. In this paper, we consider the truncated root raised cosine modulation system with timing offset and compare the channel capacity of partial response signals with different parameters. At the receiving end, demodulation uses the turbo equalization with different equalization methods to eliminate the intersymbol interference of partial response signals. Among them, we use fewer symbol paths in the BCJR algorithm to calculate the maximum posterior probability to construct low‐complexity equalization and compare according to the computational complexity and performance results of different equalizations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%