Wireless Coexistence Testing

As wireless technologies continue to expand across healthcare, consumer electronics, industrial automation, smart infrastructure, and IoT ecosystems, devices are increasingly required to operate in densely populated RF environments. In these environments, multiple wireless systems share overlapping frequency bands, creating potential interference that may degrade performance or disrupt critical functionality. Wireless coexistence testing evaluates how a device performs when operating alongside other intentional RF transmitters in realistic usage scenarios. Unlike traditional EMC immunity tests that focus on unintentional electromagnetic disturbances, coexistence testing specifically targets interference from other intentional radiators such as Wi-Fi, Bluetooth, LTE, and other RF technologies. As a global third-party testing laboratory, Alfa Chemistry provides comprehensive coexistence testing services to help manufacturers ensure robust and interference-resilient product performance.

The significance of wireless coexistence testing lies in:

• Ensuring Real-World Reliability: Modern wireless devices rarely operate in isolation. Coexistence testing ensures stable performance in environments where multiple wireless systems operate simultaneously, improving overall product reliability.
• Supporting Safety-Critical Applications: In medical and industrial applications, wireless communication failures can have serious consequences. Coexistence testing helps verify that essential functions remain stable even in RF-dense environments.
• Reducing Post-Market Risks: Identifying interference issues during development significantly reduces costly recalls, redesigns, and field performance failures.
• Accelerating Global Market Access: Many regulatory frameworks and industry guidelines increasingly expect evidence of wireless coexistence evaluation, particularly for medical devices and complex IoT systems.

Wireless coexistence testing at Alfa Chemistry

During testing, the equipment under test (EUT) is placed in controlled RF environments where multiple wireless signals are introduced simultaneously. Engineers then assess key performance indicators such as connectivity stability, packet loss, latency, throughput, and functional continuity under interference conditions. Typical test scenarios include:

We evaluate wireless capabilities across a diverse spectrum of product categories, including:

Key standards we test to include:

• ANSI C63.27 Testing: ANSI C63.27 provides a structured framework for defining functional wireless performance, identifying potential interference sources, developing test plans, and evaluating device performance under representative operating conditions. The standard emphasizes risk-based assessment and repeatable laboratory methodologies that support both product development and regulatory compliance activities.
• AIM 7351731 Testing: AIM 7351731 was developed to provide practical guidance for applying wireless coexistence evaluation methods within healthcare environments. The document supports the assessment of wireless medical devices operating in increasingly complex RF ecosystems where multiple technologies share limited spectrum resources. Our engineers can develop customized test plans aligned with AIM 7351731 requirements and healthcare-specific use cases.

Why choose us?

• Global-Standard Testing Expertise: We combine deep expertise in RF engineering, EMC compliance, and wireless system performance evaluation to deliver accurate and reliable test results.
• Advanced Wireless Testing Infrastructure: Our laboratories are equipped with programmable RF interference generators, multi-protocol wireless traffic simulators, anechoic chambers, and real-time spectrum analysis systems.
• Integrated Compliance Solutions: Beyond coexistence testing, we provide EMC, RF, SAR, safety, and regulatory compliance services, enabling a streamlined end-to-end certification pathway.
• Customized Engineering Approach: Each product is evaluated based on its unique wireless architecture, use case, and risk profile. We design tailored test plans to reflect real-world operating conditions.