21.4 An LTE-A Multimode Multiband RF Transceiver with 4RX/2TX Inter-Band Carrier Aggregation, 2-Carrier 4×4 MIMO with 256QAM and HPUE Capability in 28nm CMOS
| Autor: | Joao Ramos, YangChuan Chen, Changhua Cao, Yi-Bin Lee, Chih-Chun Tang, Caiyi Wang, Xiaochuan Guo, Hsin-Hung Chen, Tzu-Chan Chueh, Min-Hua Wu, Daniel Li, Mohammed Hassan, Carl Bryant, Cheng-Chieh Lin, Hsin-Hua Chen, Yu-Lin Hsieh, Guang-Kaai Dehng, Jin-Siang Syu, Jon Strange, Manel Collados, Chih-Hao Eric Sun |
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| Rok vydání: | 2019 |
| Předmět: |
business.industry
Computer science ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS 020208 electrical & electronic engineering Transmitter MIMO 020206 networking & telecommunications Throughput Data_CODINGANDINFORMATIONTHEORY 02 engineering and technology LTE Advanced Modulation Telecommunications link 0202 electrical engineering electronic engineering information engineering Electronic engineering Wireless Transceiver business Quadrature amplitude modulation |
| Zdroj: | ISSCC |
| Popis: | With the increasing popularity of social media, artificial intelligence (AI) and mobile computing, higher data-rate wireless communication is required. In the existing limited 4G spectrum, 3GPP standards have defined several methods to increase the data-rate, e.g., carrier aggregation (CA), high-order modulation (HOM) and MIMO technique; however this comes at the cost of extra power consumption and potential sensitivity degradation due to the spurious components generated by CA. In addition, high-power user equipment (HPUE) extends the coverage range and uplink throughput, but introduces more stringent linearity requirements for transmitter design. In this work, we present a 28nm CMOS LTE-A transceiver, capable of supporting up to 4 inter-band downlink (or 2-carrier $4 \times 4$ downlink MIMO) and 2 inter-band uplink CA concurrently while adopting ADPLLs for RX and TX with 256-QAM capability. The techniques adopted to achieve these features are described in this paper. |
| Databáze: | OpenAIRE |
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