Hi everyone,
CC2420 <http://www.ti.com/product/CC2420> returns RSSI in integer. How does it compute RSSI from the actual signal strength? Round up, round down, or something else? For instance, if the actual signal strength is -71.9 dBm, what would CC2420 <http://www.ti.com/product/CC2420>'s RSSI be? According to the datasheet, typical RSSI accuracy is +/-6 dB. Does this mean measured RSSI can deviate 6 dB from actual RSSI, which is huge error? My application intends to detect the change of interference at a node caused by other nodes' transmissions. But there is an issue. For example, the measured RSSI currently is -72.0 dBm, and then a node starts to transmit and introducing interference of -81.6 dBm, increasing the RSSI to -72.5 dBm. Because returned RSSI is integer, the RSSI can be both -72 dBm, before and after the node starts transmission. Thus the interference cannot be detected. Is there anyway to measure RSSI at better accuracy, say, 0.5 dB as my application requires? Thanks in advance. -- -Xiaohui Liu
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