Abstract
In this chapter, we investigate how to send space-time codes with full diversity and low decoding complexity for X channels using precoders. First, we assume that we have 2 transmitters and 2 receivers. Each transmitter sends different codewords to each receiver at the same time. We propose an orthogonal transmission scheme that combines space-time codes and array processing to achieve low-complexity decoding and full diversity for transmitted signals. To our best knowledge, this is the first scheme which can achieve low-complexity decoding and full diversity for any transmitted codeword in X channel when all the users transmit at the same time. Finally, we show that under certain conditions, our proposed scheme can be extended to a general case with any number of transmitters and receivers each with any number of antennas. Simulation results validate our theoretical analysis.
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© 2013 Springer-Verlag Berlin Heidelberg
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Li, F. (2013). Interference-Free Transmission for X channels. In: Interference Cancellation Using Space-Time Processing and Precoding Design. Signals and Communication Technology, vol 206. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-30712-6_5
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DOI: https://doi.org/10.1007/978-3-642-30712-6_5
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Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-30711-9
Online ISBN: 978-3-642-30712-6
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