[srslte-users] Clarification on RSSI vs RSRP

[Emilie Meyer]

Hi Ismael

Thanks for your clarification. Another newbie question: what is the
difference between RSSI and RSSI/ref-symbol?

Regards

Em

On Mon, Feb 13, 2017 at 12:45 PM, Ismael Gomez <
ismael.gomez at softwareradiosystems.com> wrote:

> Hi Emilie,
>
> RSRP is the average power of the reference signals only.
> RSSI is the average power of the entire signal where many of the resource
> elements have zero power. If you want to get the "total" received power
> just multiply RSSI by the number of resource elements in the grid.
>
> regards
>
> On Mon, 13 Feb 2017 at 10:02 Emilie Meyer <emiliemeyer1016 at gmail.com>
> wrote:
>
>> Hi all
>>
>> Maybe a silly question, but I hope someone here can help me clarify on
>> RSSI and RSRP measurement using the example code cell_measurement.
>>
>> Using the program cell_measurement, I got the measurement results as
>> shown below:
>>
>> SIGINT received. Exiting....4062 kHz, RSSI: -62.9 dBm, RSSI/ref-symbol:
>> -22.8 dBm, RSRP: -24.9 dBm, RSRQ: -10.3 dB, SNR:   6.1 dB
>>
>>
>> What I do not understand is why the RSSI (-62.9dBm) level is lower than
>> RSRP (-24.9 dBm) level.
>> Based on my understanding and what I have read, the RSSI is the total
>> received wide band power, while RSRP is the average power of one RS symbol.
>> Hence RSSI should always be larger than RSRP.
>>
>> Maybe some misunderstanding here? Can someone explain.
>>
>>
>> Regards
>>
>> Emilie
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>>
>


-- 
Regards

Emilie
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