Variable | Description |
---|---|
N RA | Number of receiving antennas |
M = 2NRA | Collision recovery factor / number of |
tags the reader is capable of resolving | |
J | Maximum number of tags |
the reader acknowledges | |
J C | Maximum number of tags with |
colour C the reader acknowledges | |
R∈[0..N] | Number of tags active in the same slot |
| Number of tags per slot |
with colour C | |
j∈[1..R] | Tag index per slot for R>0 |
i∈[1..NRA] | Receive antenna index |
r c (t) | Received signal vector |
H c | Channel matrix |
a(t) | Modulation vector |
N | Number of tags within the reader range |
F | Number of slots in a frame |
r i [k] | Sample of the received signal from i th antenna |
taken within duration of the first preamble bit t1bit | |
s l | Collision scenario l = 1,2,…,S(R) |