Please use this identifier to cite or link to this item:
|Title:||Differential modulation and demodulation for decode-and-forward multiple relay systems||Authors:||Zhu, Y.
|Issue Date:||2007||Citation:||Zhu, Y.,Xin, Y.,Kam, P.-Y. (2007). Differential modulation and demodulation for decode-and-forward multiple relay systems. Proceedings - IEEE Military Communications Conference MILCOM : -. ScholarBank@NUS Repository. https://doi.org/10.1109/MILCOM.2007.4454884||Abstract:||We consider differential modulation and demodulation in a decode-and-forward (DF) multiple relay system when channel state information (CSI) is unknown to any node. This paper first derives the maximum likelihood (ML) detector and proposes a low complexity pairwise-linear (PL) detector to well approximate the nonlinear ML detector. In both the ML and PL detectors, the receive signals at the destination from the source and all the relays are combined with different weights, since the transmission links in the relay system have different statistics. Then, the bit error rate (BER) for the PL detector is analyzed. For single relaysystems, the exact BER is obtained as a simple function of signal-to-noise ratios (SNRs), the variances, and the fading rates of the transmission links. Based on the exact BER, a BER approximation at high SNR is derived, and explicitly shows the diversity order and the asymmetry between the source-relay link and the relay-destination link. For multiple relay systems, a Cherenoff upper bound on the BER is obtained. In addition, our results are applicable to the cases where all the transmission links have arbitrary fading rates. © 2007 IEEE.||Source Title:||Proceedings - IEEE Military Communications Conference MILCOM||URI:||http://scholarbank.nus.edu.sg/handle/10635/69939||ISBN:||1424415136||DOI:||10.1109/MILCOM.2007.4454884|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Oct 18, 2020
checked on Oct 5, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.