7.3 A 40nm low-power transceiver for LTE-A Carrier Aggregation

2017 IEEE International Solid-State Circuits Conference (ISSCC) Pub Date : 2017-02-01 DOI:10.1109/ISSCC.2017.7870295

Chinq-Shiun Chiu, Shih-Chieh Yen, Chi-Yao Yu, Tzung-Han Wu, C. Chou, S. Tseng, Chih-Hsien Shen, Yu Lu, Hsinhung Chen, Song-Yu Yang, Yen-Tso Chen, G. Dehng, Yangjian Chen, C. Beghein, D. Nalbantis, M. Collados, B. Tenbroek, J. Strange, Caiyi Wang

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引用次数: 18

Abstract

The demand of higher data-rates for mobile communication has driven the LTE standard to adopt methods to increase channel bandwidth by Carrier Aggregation (CA), this is known as LTE-Advanced (LTE-A). Due to regional spectrum allocation, these carriers can be inter-band, or intra-band with contiguous (CCA) or non-contiguous (NCCA) channels. The band combinations create a major challenge for an LTE-A transceiver (TRX) in dealing with the intermodulation (IM) of aggregated channels. These IM sources include fundamental and harmonics of LOs, VCOs, and the transmitter (TX) modulated signals. In addition, when multiple receivers (RXs) and synthesizers (SXs) are needed to support CA, power consumption becomes a key challenge. This work describes an adaptive RX that can adjust trade-offs between power consumption and RX performance, allowing significant power reduction under normal field conditions. Additionally several techniques are described for mitigation of CA IM spurs.

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7.3用于LTE-A载波聚合的40nm低功耗收发器

移动通信对更高数据速率的需求促使LTE标准采用了通过载波聚合(Carrier Aggregation, CA)来增加信道带宽的方法，即LTE- advanced (LTE- a)。由于区域频谱分配，这些载波可以是带间的，也可以是带内的，具有连续(CCA)或非连续(NCCA)信道。频带组合给LTE-A收发器(TRX)在处理聚合信道的互调(IM)方面带来了重大挑战。这些IM源包括LOs、vco和发射机(TX)调制信号的基波和谐波。此外，当需要多个接收器(RXs)和合成器(SXs)来支持CA时，功耗成为一个关键挑战。这项工作描述了一种自适应RX，可以调整功率消耗和RX性能之间的权衡，在正常的现场条件下可以显着降低功率。此外，还介绍了几种缓解CA - IM杂散的技术。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2017 IEEE International Solid-State Circuits Conference (ISSCC)

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