Two-path succussive relaying with hybrid demodulate and forward
IEEE Transactions on Vehicular Technology
Institute of Electrical and Electronics Engineers (IEEE)
© 2012 IEEE
This paper proposes a novel demodulation-and-forward (DMF) scheme for the two-path succussive relay system. While the two-path relaying avoids the data rate loss that occurs in many one-relay cooperative systems, its performance is severely limited by interrelay interference. In this paper, we propose a hybrid DMF scheme for the two-path relay system so that the relays can switch between direct and differential demodulation modes according to channel conditions. The hybrid DMF scheme not only performs better than existing two-path approaches but is easy to achieve synchronization at the relays as well, which is particularly important as a relay receives signals from both the source and the other relay. The proposed hybrid DMF scheme provides an innovative way to implement the two-path relaying scheme.
This work was supported by the Important National Science and Technology Specific Projects of China under Grant 2011ZX03004-005.
This is the author accepted manuscript. The final version is available from IEEE via the DOI in this record
Vol. 61 (5), pp. 2044 - 2053