TD multi-carrier technology makes significant progress
While China Mobile and the industry chain are stepping up the layout of the TD-LTE long-term evolution technology, as the recent evolution of TD-SCDMA, multi-carrier TD-HSPA + has also recently achieved a major breakthrough, which is undoubtedly an important milestone in the development of the TD-SCDMA industry . The reporter saw at the "China International Information and Communication Exhibition 2011" that the international chip manufacturer Marvell from the United States exhibited the industry's first multi-carrier TD-HSPA + communication chip and data card reference design, which showed that TD-SCDMA The breakthrough of carrier technology in the field of terminal chips has overcome a major difficulty for the upgrade and attack of TD-SCDMA networks. In the future, with the continuous introduction of TD multi-carrier terminals, TD-SCDMA multi-carrier technology will bring better network experience to many TD users. Network speed increased by more than 4 times Marvell showed this multi-carrier TD-HSPA + communication chip, model: Marvell PXA 1202. The processor uses an advanced 40-nanometer process, supports DLDC, 64QAM and TS0 enhancement technologies, and the diversity reception of base station antennas. It can be used to develop TD-SCDMA standard mobile phones, tablet computers, Internet cards, wireless routers and other terminal devices. By adopting dual-carrier bundling technology for the TD-SCDMA system HSPA + downlink, the theoretical value of single-user throughput can be increased from 1.68 Mbps to 6.72 Mbps under the time slot configuration of 2: 4 in the uplink and downlink, realizing a 4-fold increase. In July 2011, in the joint test conducted by ZTE on the existing network in Guangzhou, the TD-SCDMA network card equipped with Marvell PXA 1202 was used in conjunction with ZTE ’s base station supporting DLDC multi-carrier technology, and the actual single user throughput reached more than 5Mbps. In August of the same year, Huawei adopted the Marvell PXA 1202 multi-carrier terminal and TD Tech's base station supporting multi-carrier technology to carry out joint debugging of dual-carrier bundling in Shanghai. When the time slot configuration of uplink and downlink 1: 5, the peak rate was as high as 8.4Mbps. In the evolution of TD-SCDMA in China, TD-SCDMA and TD-LTE will coexist for a long time. As Cao Shumin, Dean of the Telecommunications Research Institute of the Ministry of Industry and Information Technology said, "TD-SCDMA and TD-LTE are complementary and coexisting. Even if TD-LTE is mature, it does not mean that TD-SCDMA has no living space." Therefore, as The recent evolution of TD-SCDMA technology, the development of multi-carrier TD-HSPA + is of great significance for the transition and evolution of TD-SCDMA to TD-LTE. Cohesion, Yang Fan set sail At present, with the promotion of all aspects of the industry chain, the commercialization of TD-SCDMA multi-carrier technology is progressing smoothly, and Yang Fan sets sail. In September 2011, Marvell's PXA 1202 multi-carrier communication chip engineering samples began to provide, and chip manufacturers such as Lianxin also plan to launch TD-SCDMA multi-carrier chips next year. Not long ago, at the "TD Terminal Technology Seminar" held by the TD Industry Alliance, most companies showed a very positive attitude towards TD-SCDMA dual-carrier and TD-HSPA + technology. Yang Hua, secretary general of the TD Industry Alliance, said that TD spectrum resources are more abundant and more flexible than WCDMA and CDMA2000. The combination of multi-carrier HSPA + and spectrum resource advantages can ensure that TD users feel better and enhance the competitiveness of TD networks and services. In the industrial advancement, TD-SCDMA and TD-LTE must not be regarded as the opposite relationship. The coordinated development of the two should be done well, and no effort should be spared to promote the industrialization of TD-LTE. Before TD-LTE multi-mode handheld terminal products mature, we must focus on the application of TD-SCDMA enhancement technology to support market development. The development of TD-SCDMA multi-carrier technology can better promote TD network evolution. After the commercialization of TD-LTE, TD-SCDMA multi-carrier will not only become an advantageous and supplementary to TD-LTE network, but also, multi-carrier technology can greatly increase the data rate of a single user and effectively improve the user experience.
Power 12W ,output voltage 3-12V, output current Max 1A, 6 dc tips. We can meet your specific requirement of the products, like label design. The material of this product is PC+ABS. All condition of our product is 100% brand new.
Our products built with input/output overvoltage protection, input/output overcurrent protection, over temperature protection, over power protection and short circuit protection. You can send more details of this product, so that we can offer best service to you!
12W Wall Adapter, 12W Wall Power Supply,12W Power Cord In Wall, 12W Wall Power Adapter Shenzhen Waweis Technology Co., Ltd. , https://www.waweis.com