Elaborating the title: Transmit power high, medium and low in your router at home what is effective for better performance and provide best internet speed
My question: Suppose router one transmit power is low and bandwidth is 20Mbps, another router transmit power is high and bandwidth is 20Mbps which router is provide faster internet speed at 1M distance from both router.
ChatGPT said:
At a distance of 1 meter from both routers, the router with higher transmit power is likely to provide faster and more stable internet speed, even though both routers have the same bandwidth of 20 Mbps. Here’s why:
Transmit Power:
- Higher Transmit Power: A router with higher transmit power will have a stronger signal, which means it can maintain a higher quality of the connection. This reduces the likelihood of interference and signal degradation, leading to better data transfer rates and more consistent speeds.
- Lower Transmit Power: A router with lower transmit power may have a weaker signal, which could result in more interference, lower signal quality, and potentially reduced effective throughput, especially if there are obstacles or interference.
Bandwidth:
- Both Routers: Since both routers have the same bandwidth of 20 Mbps, they can theoretically support the same maximum data rate. However, the quality of the signal, which is influenced by transmit power, will affect how close to that maximum you can get in real-world conditions.
Conclusion:
At 1 meter, where signal degradation is minimal, the router with higher transmit power will likely provide a faster and more stable internet connection. The higher transmit power ensures better signal strength and reduced packet loss, resulting in faster effective speeds even with the same bandwidth.
You said:
That's an interesting result! Several factors could explain why the router with lower transmit power provided faster internet speed in your test:
1. Signal Saturation (Overpowering):
- Higher Transmit Power: When the transmit power is too high, especially at a close range like 1 meter, it can cause the signal to become too strong, leading to saturation of the receiver's circuitry. This can result in increased noise and errors, ultimately reducing the effective speed.
- Lower Transmit Power: A lower transmit power might provide a cleaner, more precise signal at close range, leading to fewer errors and better performance.
2. Interference:
- Higher Transmit Power: It may cause more interference with other nearby wireless devices, especially in a crowded Wi-Fi environment. This can lead to increased packet loss or retransmissions, slowing down the connection.
- Lower Transmit Power: Reduces the range of interference, leading to a cleaner connection in a congested area.
3. Hardware and Software Optimization:
- Some routers are optimized for certain power levels. If the router's internal algorithms are tuned to work better at lower power levels, it could perform more efficiently, leading to higher actual throughput.
4. Power Management and Heat:
- Higher Transmit Power: Generates more heat, which can potentially cause the router to throttle performance to prevent overheating.
- Lower Transmit Power: Produces less heat, maintaining consistent performance.
5. Antenna Design:
- The design and orientation of the router's antenna could make a difference in how the signal is distributed, especially at close range.
Conclusion:
While it’s generally expected that higher transmit power would provide better performance, your result suggests that, in certain scenarios, lower transmit power can result in better speeds. This might be due to reduced interference, less signal saturation, or better optimization at lower power levels.
It's a good reminder that real-world performance can vary based on many factors, and testing in your specific environment is always valuable.
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