Abstract
In this paper we present a summary of nonlinear system level problems in beamforming. The paper summarizes first the nonideal phenomena in power amplifiers, mixers, and oscillators. In digital predistortion inversion of the nonlinearity is needed. Not all linear and nonlinear systems are invertible or they may have only a preinverse or postinverse. Commutation is needed in indirect learning architectures for predistortion. The spatial and temporal order of compensation of different distortions is discussed. Some numerical results are also included.
| Original language | English |
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| Title of host publication | Proceedings of the XXIXth URSI General Assembly in Chicago |
| Publisher | International Union of Radio Science (URSI) |
| Number of pages | 4 |
| Publication status | Published - 2008 |
| MoE publication type | A4 Article in a conference publication |
| Event | XXIXth URSI General Assembly 2008 - Chicago, United States Duration: 7 Aug 2008 → 16 Aug 2008 |
Conference
| Conference | XXIXth URSI General Assembly 2008 |
|---|---|
| Country/Territory | United States |
| City | Chicago |
| Period | 7/08/08 → 16/08/08 |