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https://doi.org/10.1109/TSP.2013.2254480
DC Field | Value | |
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dc.title | Transmit optimization with improper gaussian signaling for interference channels | |
dc.contributor.author | Zeng, Y. | |
dc.contributor.author | Yetis, C.M. | |
dc.contributor.author | Gunawan, E. | |
dc.contributor.author | Guan, Y.L. | |
dc.contributor.author | Zhang, R. | |
dc.date.accessioned | 2014-10-07T04:38:40Z | |
dc.date.available | 2014-10-07T04:38:40Z | |
dc.date.issued | 2013 | |
dc.identifier.citation | Zeng, Y., Yetis, C.M., Gunawan, E., Guan, Y.L., Zhang, R. (2013). Transmit optimization with improper gaussian signaling for interference channels. IEEE Transactions on Signal Processing 61 (11) : 2899-2913. ScholarBank@NUS Repository. https://doi.org/10.1109/TSP.2013.2254480 | |
dc.identifier.issn | 1053587X | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/83217 | |
dc.description.abstract | This paper studies the achievable rates of Gaussian interference channels with additive white Gaussian noise (AWGN), when improper or circularly asymmetric complex Gaussian signaling is applied. For the Gaussian multiple-input multiple-output interference channel (MIMO-IC) with the interference treated as Gaussian noise, we show that the user's achievable rate can be expressed as a summation of the rate achievable by the conventional proper or circularly symmetric complex Gaussian signaling in terms of the users' transmit covariance matrices, and an additional term, which is a function of both the users' transmit covariance and pseudo-covariance matrices. The additional degrees of freedom in the pseudo-covariance matrix, which is conventionally set to be zero for the case of proper Gaussian signaling, provide an opportunity to further improve the achievable rates of Gaussian MIMO-ICs by employing improper Gaussian signaling. To this end, this paper proposes widely linear precoding, which efficiently maps proper information-bearing signals to improper transmitted signals at each transmitter for any given pair of transmit covariance and pseudo-covariance matrices. In particular, for the case of two-user Gaussian single-input single-output interference channel (SISO-IC), we propose a joint covariance and pseudo-covariance optimization algorithm with improper Gaussian signaling to achieve the Pareto-optimal rates. By utilizing the separable structure of the achievable rate expression, an alternative algorithm with separate covariance and pseudo-covariance optimization is also proposed, which guarantees the rate improvement over conventional proper Gaussian signaling. © 1991-2012 IEEE. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1109/TSP.2013.2254480 | |
dc.source | Scopus | |
dc.subject | Improper Gaussian signaling | |
dc.subject | interference channel | |
dc.subject | pseudo-covariance optimization | |
dc.subject | widely linear precoding | |
dc.type | Article | |
dc.contributor.department | ELECTRICAL & COMPUTER ENGINEERING | |
dc.description.doi | 10.1109/TSP.2013.2254480 | |
dc.description.sourcetitle | IEEE Transactions on Signal Processing | |
dc.description.volume | 61 | |
dc.description.issue | 11 | |
dc.description.page | 2899-2913 | |
dc.description.coden | ITPRE | |
dc.identifier.isiut | 000319592700014 | |
Appears in Collections: | Staff Publications |
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