Thanks bill for your wisdom shared. I will certainly look and do a proper evaluation before embarking on any NLOS products.
Alvin ----- Original Message ----- From: "bill kunz" <[EMAIL PROTECTED]> Date: Tuesday, May 4, 2004 8:12 am Subject: RE: [wirelesslan] navini ripwave non line of sight > <html><body> > > > <tt> > It is best to look at the range, density and type of > deployment you need. > > First some background. > > > > A LOS system relies on an almost "clear", un- > obstructed path between the > > transmitter and receiver. All NLOS systems rely on additional > encoding and > > signal processing to identify and utilize energy from signals that > arrive > thru different paths. In theory the transmitted signal can be > reconstructed > from signals that all arrived by paths that included reflections > without a > > dominant line of sight path. > > > > You need to look at the signal strength and signal to noise > ratio required > > to enable that processing to be successful. If you have a long > range system > > in an area where labor is cheap, the topology is favorable > (hilltop tower) > > and no one minds seeing antennas on poles, I'd opt for the > simplier, cheaper > > LOS system. If you are deploying in an urban canyon over a short > range with > > a lot of restrictions a NLOS system may be the only way to make your > > deployment work without a lot of basestations. > > > > I haven't evaluated the Navini system myself so I won't > comment on it > > directly. I will say that many of these "next > generation" fixed wireless > > systems have failed to produce the astounding time to market and > > price/performance results that were claimed when they raised money and > > slowed down the "last generation" equipment market. > > > > Bill Kunz > > Broadband Enterprises > > > > -----Original Message----- > > From: afsc [mailto:[EMAIL PROTECTED] > > Sent: Saturday, May 01, 2004 10:34 PM > > To: [EMAIL PROTECTED] > > Subject: [wirelesslan] navini ripwave non line of sight > > > > > > I am in the midst of evaluating NLOS system, can anybody assist me > > to understand the reliability of NLOS system as many had comment > > negatively about NLOS system. Should I just go back to basic and use > > the LOS system? 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