Error Correction in Digital Systems

Borowik, Bohdan; Karpinskyy, Mykola; Lahno, Valery; Petrov, Oleksandr

doi:10.1007/978-94-007-5228-3_4

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2018

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“…A polynomial GF(2) is a polynomial in a single variable whose coefficient are 0 and 1 [22]. To compute an R-bit CRC checksum, the generator polynomial must be of R degree [27,28].…”

Section: System Modelmentioning

confidence: 99%

Efficient error detection in soft data fusion for cooperative spectrum sensing

Bhatti

Ahmed

Saeed

et al. 2018

AEU - International Journal of Electronics and Communications

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The primary objective of cooperative spectrum sensing (CSS) is to determine whether a particular spectrum is occupied by a licensed user or not, so that unlicensed users called secondary users (SUs) can utilize that spectrum, if it is not occupied. For CSS, all SUs report their sensing information through reporting channel to the central base station called fusion center (FC). During transmission, some of the SUs are subjected to fading and shadowing, due to which the overall performance of CSS is degraded. We have proposed an algorithm which uses error detection technique on sensing measurement of all SUs. Each SU is required to re-transmit the sensing data to the FC, if error is detected on it. Our proposed algorithm combines the sensing measurement of limited number of SUs. Using Proposed algorithm, we have achieved the improved probability of detection (PD) and throughput. The simulation results compare the proposed algorithm with conventional scheme.

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“…A polynomial GF(2) is a polynomial in a single variable whose coefficient are 0 and 1 [22]. To compute an R-bit CRC checksum, the generator polynomial must be of R degree [27,28].…”

Section: System Modelmentioning

confidence: 99%