Double-differential coding for orthogonal space-time block codes

Abstract— Communications over multiple-input multipleoutput (MIMO) channels with carrier offsets is an important practical and theoretical problem. Double-differential coding is a technique, which allows the receiver to decode the data without any channel or carrier offset knowledge. We propose a double-differential (DD) coding scheme which is applicable to any square orthogonal space-time block codes (OSTBC) using M-PSK constellation. The main advantages of the proposed DD coding scheme are: 1) The previously proposed DD codes are applicable only to the specific class of space-time block codes which follow the diagonal unitary group property, whereas our DD coding is applicable to any square OSTBC. 2) We propose a suboptimal decoder which preserves the linear decoding property of the OSTBC. We derive an upper bound of the pairwise error probability (PEP) of the proposed double-differential orthogonal space-time block codes (DDOSTBCs). The proposed DDOSTBC is able to achieve better ...

• Type: Conference
• Year: 2008
• Where: ICASSP
• Authors: Manav R. Bhatnagar, Are Hjørungnes, Lingyang Song
• Keywords: DD Coding, DD Coding Scheme, ICASSP 2008, Signal Processing, Space-time Block Codes