The difference between RSS and Rssi _ Research direction

In the wireless field, many people do not understand RSS and rssi exactly what kind of difference, and the textbook does not give a more specific explanation. The same many documents are vague and uncertain, some use RSS, some use Rssi,

Confuse students who have started or studied for years. Below, we will briefly explain the two terms above.

Rss:received signal strength, translated is to indicate the reception signal strength, is the real signal strength. R=10LG p, where p is the transmit power of the launch segment, r means the signal strength received by the receiving end is generally negative. Only in the ideal case, R takes a value of 0. Ideally, the transmitting power of the transmitter end is transmitted to the receiving end, and the received power is the same, it is considered to be an ideal situation. But in practice, the ideal environment does not exist. Therefore, the resulting RSS is generally expressed in negative numbers. The signal between the -50dbm--0dbm is very good and can satisfy our basic use.

Rssi:received Signal Strength indicator, translated is to receive signal strength instructions, through artificial processing, and the signal strength. In general, RSS negative numbers are not very well understood and can be transformed into positive values (RSSI, no units).

In general literature, the signal strength is expressed in RSS. So you don't have to tangle with the two terms.