In this paper, we propose high-rate distributed space-time-frequency codes (DSTFCs) to
exploit maximum achievable diversity gains over frequency-selective fading channels. The …

In cooperative communications, due to the distributed nature, multiple different carrier
frequency offsets (CFOs) may occur and make the channel time-varying. It is hard for the …

In cooperative communication networks, the performance of distributed space-time code will
be severely degraded if the timing synchronization among relay nodes is not perfect. In this …

In user-cooperative communications, relay nodes are usually asynchronous. By realizing
that the processing in the frequency domain is insensitive to the errors in the time domain …

In cooperative communication networks, the performance of the distributed space-time code
(DSTC) will be severely degraded if the timing synchronization among relay nodes are not …

In this paper, we propose a family of distributed space-frequency codes (SFCs) for frequency
asynchronous cooperative relay networks with multiple carrier frequency offsets (CFOs) and …

Designing diversity achieving schemes over the wireless broadband fading relay channels
is crucial to achieve higher diversity gains. These gains are achieved by exploiting the …

A full-rate distributed space-time (ST) code design is proposed for amplify-and-forward
cooperative wireless channels. By employing a signal space diversity technique at the …

In this letter, we propose a simple distributed space-frequency code with both timing errors
and multiple carrier frequency offsets (CFO) in asynchronous cooperative communications …

In user cooperative communications, time offsets among the relay nodes may distort the
structure of a distributed space-time code, and therefore impair the diversity gain. In this …