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Anritsu Successfully Completes 4x4 MIMO Testing of GCT Semiconductor LTE-Advanced Single Chip

MD8430A Signaling Tester with Rapid Test Designer Used to Test GDM7243Q 4G LTE-Advanced Chip Operation and 4x4 MIMO Capabilities


Anritsu announces it successfully completed testing of GCT Semiconductor’s 4G LTE-Advanced chip, GDM7243Q, using Anritsu’s MD8430A signaling tester with Rapid Test Designer (RTD).

GCT Semiconductor, a leading designer and supplier of advanced 4G mobile semiconductor solutions, offers an advanced FDD-TDD LTE Category 5/6/7 single chip, with the world’s first 4X4 MIMO carrier aggregation for LTE. GDM7243Q’s operation and 4X4 MIMO capabilities have been tested on Anritsu’s signaling testing system. 4x4 Multiple Input Multiple Output (MIMO) involves the use of four transmit antennas at the LTE basestation, and four receiver antennas inside the user equipment (UE) device, in order to increase spectral efficiency, achieve higher data throughout and improve coverage.

Anritsu’s MD8430A is a LTE signaling tester that can simulate a basestation with up to eight transmit antennas.  The engineering team at GCT used the MD8430A controlled by RTD software to transmit at up to 300Mbps over a 4x4 MIMO connection, and were able to verify that their chip could reliably sustain the connection over an extended period of time.

“We depend on Anritsu equipment to test our LTE-Advanced chip,” said Dr. Jeong-Min Kim, CTO and Vice President of Engineering at GCT Semiconductor. “Anritsu’s MD8430A and RTD solution has proven to be a robust platform, supporting critical features such as 4x4 MIMO,” he added.

“Anritsu is pleased that GCT Semiconductor has used the MD8430A with RTD to verify its 4x4 MIMO capability,” stated Kenji Tanaka, Executive Vice President at Anritsu. “This activity shows how Anritsu continues to help LTE device makers prove their leading-edge technology in an intensely competitive market where reducing the product launch cycle time is critical to success.”

About GCT Semiconductor, Inc.

GCT Semiconductor is a leading fabless designer and supplier of advanced 4G LTE and WiMAX semiconductor solutions. GCT’s market-proven LTE solutions, commercially available since 2010, have enabled fast and reliable LTE connectivity to numerous commercial devices such as smartphones, tablets, hotspots, USB dongles, routers, M2M applications, etc., for the world’s top LTE carriers. GCT’s system-on-chip solutions integrate radio frequency, baseband modem and digital signal processing functions, therefore offering complete 4G platform solutions with small form factors, low power consumption, high performance, high reliability and cost effectiveness. For more information, visit

About Anritsu

Anritsu Corporation ( has been a provider of innovative communications solutions for more than 110 years. The company's test and measurement solutions include wireless, optical, microwave/RF and digital instruments, operations support systems and solutions that can be used during R&D, manufacturing, installation, and maintenance. Anritsu also provides precision microwave/RF components, optical devices, and high-speed devices for design into communication products and systems. With the addition of OSS monitoring solutions it has expanded its offering to provide complete solutions for existing and next-generation wireline and wireless communication systems and service providers. Anritsu sells in over 90 countries worldwide with approximately 4,000 employees.


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