The following figure shows that, using relays can extend communication distances. Assume the Decode-and-Forward relays are utilized, and application traffic is FTP/TCP. The peak Throughput (TP) is 42 Mbps for a single Access Point (AP) without using relays. Briefly explain why the peak Throughput (TP) drops to around 20 Mbps using 1 relay, around 14 Mbps using 2 relays and approximate 10 Mbps using 3 relays.
The following figure shows that, using relays can extend communication distances. Assume the Decode-and-Forward relays are utilized, and application traffic is FTP/TCP. The peak Throughput (TP) is 42 Mbps for a single Access Point (AP) without using relays. Briefly explain why the peak Throughput (TP) drops to around 20 Mbps using 1 relay, around 14 Mbps using 2 relays and approximate 10 Mbps using 3 relays.
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The following figure shows that, using relays can extend communication distances. Assume the Decode-and-Forward relays are utilized, and application traffic is FTP/TCP. The peak Throughput (TP) is 42 Mbps for a single Access Point (AP) without using relays. Briefly explain why the peak Throughput (TP) drops to around 20 Mbps using 1 relay, around 14 Mbps using 2 relays and approximate 10 Mbps using 3 relays.
Transcribed Image Text:Throughput with fixed relays at different distances
45
TP at AP
TP at relay 1 at 100 m (20 dB receive antenna gain)
TP at relay 2 at 200 m (20 dB receive antenna gain)
TP at relay 3 at 300 m (20 dB receive antenna gain)
* Maximum acheivable TP
40
35
30
25
High bit rate due
to receive antenna
gain at fixed relays
20
15
10
b
50
100
150
200
250
300
350
400
450
500
Distance (m)
АР
Relay 1
Relay 2
Relay 3
Throughput (Mb/s)
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