Receiver Design for Time-Based Ranging with IEEE 802.11b Signals

Table 1

Range estimates.

Parameter	Variable	Ambiguity	Resolution
Fractional delay	𝜖̂	91 ns	Arbitrary
Correlator lock-in	𝑝	1 μs	𝑇l or 91 ns
Epoch	None	None	𝑇l or 91 ns
Carrier freq. skew	Ω	None	Arbitrary
Carrier phase	𝜃	408 ps	Arbitrary
CIR	𝛽	None	Arbitrary