Optimum power allocation for LDPC coded soft forwarding scheme in wireless networks

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

1 Цитирования (Scopus)

Аннотация

This paper proposes a new power efficient multilevel threshold based soft quantization (MLT- SQ+PA) scheme for a multiple access relay system (MARS). In the proposed MLTSQ+ PA protocol, the relay computes the reliabilities, expressed as log-likelihood ratios (LLRs), of the received signals from the two sources. We provide an analytical closed form expression for the optimized power allocation factor at the relay. The relay evaluates the LLRs of the network-coded packet, quantizes and scales these using the optimum power allocation factor, forwarding the resulting »quantized soft symbols» to the destination. Compared to competing schemes, the performance of our system is superior in terms of BER when the same amount of channel state information (CSI) is exploited.

Язык оригиналаАнглийский
Название основной публикации2015 IEEE 81st Vehicular Technology Conference, VTC Spring 2015 - Proceedings
ИздательInstitute of Electrical and Electronics Engineers Inc.
Том2015
ISBN (электронное издание)9781479980888
DOI
СостояниеОпубликовано - 1 июл 2015
Опубликовано для внешнего пользованияДа
Событие81st IEEE Vehicular Technology Conference, VTC Spring 2015 - Glasgow, Великобритания
Продолжительность: 11 мая 201514 мая 2015

Конференция

Конференция81st IEEE Vehicular Technology Conference, VTC Spring 2015
СтранаВеликобритания
ГородGlasgow
Период11.5.1514.5.15

ASJC Scopus subject areas

  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Цитировать

    Jayakody, D. N. K., & Li, J. (2015). Optimum power allocation for LDPC coded soft forwarding scheme in wireless networks. В 2015 IEEE 81st Vehicular Technology Conference, VTC Spring 2015 - Proceedings (Том 2015). [7145988] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTCSpring.2015.7145988