Improper Gaussian signaling for the Z-interference channel
Document typeConference report
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessRestricted access - publisher's policy
The optimal transmission scheme for a multiple-input multiple-output point-to-point channel (MIMO-P2P) is dependent on the type of received interference, which can be either proper or improper. We will show that the presence of improper interference is beneficial in terms of improving the achievable rate compared to a case with proper interference. These benefits are due to using widely linear precoder and receiver. Additionally, we investigate a cellular scenario where two types of users are coexisting, ones that are receiving proper interference while others which might be receiving improper interference, trying to devise the best transmission scheme to be adopted. We propose an improper Gaussian signaling-based scheme that allows controlling system performance and fairness in terms of bitrate through a single parameter.
CitationLagen, S.; Agustin, A.; Vidal, J. Improper Gaussian signaling for the Z-interference channel. A: IEEE International Conference on Acoustics, Speech, and Signal Processing. "Acoustics, Speech and Signal Processing (ICASSP), 2014 IEEE International Conference on". Florència: Institute of Electrical and Electronics Engineers (IEEE), 2014, p. 1140-1144.