A distributed space-time coding in asynchronous wireless relay networks

Authors:
Xiaoyong Guo;Xiang-Gen Xia
Affiliations:
Dept. of Electr. & Comput. Eng., Delaware Univ., Newark, DE;-
Venue:
IEEE Transactions on Wireless Communications - Part 2
Year:
2008

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Abstract

Jing and Hassibi recently presented a detailed analysis on the problem of distributed space-time coding for a synchronized wireless relay network, where only linear transforms are implemented at relay nodes, and proposed a linear dispersion coding scheme. In this letter, we extend it to asynchronous wireless networks by employing OFDM to combat timing errors from relay nodes. Based on a layered structure, we present a distributed space-time code design achieving full spatial diversity for an asynchronous wireless relay network.