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Nonlinear distortions in analog frontends are becoming a growing problem which is not limited to power amplifiers. Modern modulation methods such as OFDM and next generation standards have high linearity requirements on all components in the signal path. A radio system that can tolerate a certain degree of nonlinear distortion without substantial loss of performance could enable high cost savings...
Nonlinear distortions by analog frontend components are becoming a growing problem. Not only do stringent linearity requirements that are crucial for modern modulation schemes like OFDM boost the costs in development and fabrication, but highly linear amplifiers are usually very energy inefficient. After looking at the theoretical and practical aspects of estimation of memoryless AM/AM nonlinearities,...
Nonlinear distortions by analog frontend components are becoming a growing problem. Not only do stringent linearity requirements that are crucial for modern modulation schemes like OFDM boost the costs in development and fabrication, but highly linear amplifiers are usually very energy inefficient. This paper is a follow-up on previous work on the blind estimation and mitigation of nonlinearity characteristics...
Nonlinear distortions in the analog frontend are becoming a growing problem. With rising requirements it becomes more expensive to provide components with sufficient linearity. Especially in the receiver, where out-of-band radiation is not an issue, relaxing the requirements on the analog components could significantly reduce development and production costs as well as increase the energy efficiency...
Mobile internet devices are among the fastest growing markets in consumer electronics. A big issue with these devices is the low battery capacity that requires the user to recharge the device regularly. This paper aims to reduce the energy consumption of LTE modems used in future devices. For this, the LTE HARQ process is modeled as a Markov chain and a simple generic model for energy consumption...
Single-carrier modulation is currently regaining attractiveness for high-speed communications standards. Because of its robustness towards analog hardware impairments, single-carrier modulation can get along with low transceiver accuracy as compared to multi-carrier modulation. One hardware impairment that can, however, still seriously degrade the performance of single-carrier systems is amplifier...
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