A multilevel soft quantize-and-forward scheme for multIPle access relay systems

Dushantha N.K. Jayakody, Jun Li, Bin Chen, Mark F. Flanagan

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

6 Цитирования (Scopus)

Аннотация

This paper proposes the novel technique of multilevel threshold based soft quantization (MLT-SQ) for a multIPle access relay system (MARS). The scheme is suitable for systems using binary phase-shift keying (BPSK) and network coding at the relay. In the proposed MLT-SQ protocol, the relay evaluates the reliabilities, expressed as log-likelihood ratios (LLRs), of the received signals from the two sources. It then computes the LLRs of the network-coded packet and quantizes these using a set of optimized multilevel thresholds, forwarding the resulting 'quantized soft symbols' to the destination. We provide the derivation for the bit error rate (BER) at the destination, based on which we optimize the multilevel thresholds to minimize the BER. 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 публикации2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014
ИздательInstitute of Electrical and Electronics Engineers Inc.
Страницы464-468
Число страниц5
Том2014-June
ISBN (электронное издание)9781479949120
DOI
СостояниеОпубликовано - 25 июн 2014
Опубликовано для внешнего пользованияДа
Событие2014 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, IEEE PIMRC 2014 - Washington, Соединенные Штаты Америки
Продолжительность: 2 сен 20145 сен 2014

Конференция

Конференция2014 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, IEEE PIMRC 2014
СтранаСоединенные Штаты Америки
ГородWashington
Период2.9.145.9.14

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Fingerprint Подробные сведения о темах исследования «A multilevel soft quantize-and-forward scheme for multIPle access relay systems». Вместе они формируют уникальный семантический отпечаток (fingerprint).

  • Цитировать

    Jayakody, D. N. K., Li, J., Chen, B., & Flanagan, M. F. (2014). A multilevel soft quantize-and-forward scheme for multIPle access relay systems. В 2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014 (Том 2014-June, стр. 464-468). [7136210] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PIMRC.2014.7136210