The detector of cell phone jammer system can detect the signal

Produce the pilot phase pollution MM (mobility management) can not correctly identify the lead of cell phone communication frequency which sectors, such interference is very large, cell phones and base stations can not be normal calls necessarily leads to the channel allocation failed or dropped calls. Network, you can set up the Pilot Inc. parameter set PN reuse distance, generally does not appear two of the same PN covering the same area or unable to identify the sectors, the existing network in the pilot phase pollution probability than the smaller. CDMA system, in simple terms, the pilot strength of pollution is, when the mobile station in which the region has multiple pilot signals, pilot signals are strong or are very weak, resulting in the current EcIo poor, or frequent switching phenomenon. Here are two cases. The line centralized controller of  cell phone blocker system is the relatively independent hardware case.
One is that, due to the Rake receiver of CDMA cell phones can only be demodulated at the same time from the three pilot signal so more than three strong pilot when the pilot signal we received more than three pilot signal exists, it will interfere with the system, resulting in EcIo decline, it is regarded as the existence of the pilot strength of pollution. One is that the existence of more than one pilot signal to the mobile station area, but weaker than the signal strength of each pilot, EcIo similar to, that is not a signal good enough pilot dominant signals in fast fading cause the mobile station during a call when frequent switching between different sectors of the business channel, and can easily result in dropped calls. The shielding effect and long-time stable work of  cell phone jammer  should be ensured.
Dingli drive test software point of view, its manifestations are usually cell phone received pilot power is good enough or similar, but all sectors are weak Ec / Io, from software real-time display of the active set, candidate set and neighbor set information to see that the strength of a good or intensity similar to the pilot number, if more than three, this could EcIo decline, or frequent soft switching. This situation can be seen as more than three pilot signal to activate the set inside the three pilot interference. CDMA is the system of self-interference, all base stations are used to transmit signals in the same band, while the cell phone is also in the same frequency band transmitted signal, each base station the mobile terminal will interfere with each other.  cell phone jammer  will have the normal dissipation as the working time accumulates.
Your cell phone is receiving from the base station and cell phone business communications signal, the cell phone receiver to the air base station signal superimposed. These signals from different base stations using different PN code offset to allow the cell phone to distinguish between the signals of different base stations and sectors, while the base station walsh code to distinguish between the different channels that different users. Three sectors of the PN offset the PNi, PNj, PNk, each sector with two users call 1 and 2, assuming that these business communications signal S (t) 1a, S (t) 2a ; S (t) 1b, S (t) 2b; S (t) 1c, S (t) 2c. Base station in a call with the user, the base station through the MM (Mobility Management) distribution of walsh code to distinguish between the channel and users in the same sector of the distribution of walsh code must be different, but the same can be allocated in different sectors. The walsh assume that the distribution of the sectors respectively for WALSH1a, WALSH2a the; WALSH1b, WALSH2b the; WALSH1c, WALSH2c. The detector of cell phone jammer system can detect the signal.
Motorola base stations, base stations and subscriber communication signal is equivalent to S (t) through the channel coding, the MCC board 1a × WALSH1a, then in BBX board conducted RF modulator, which is equivalent to S (t) 1a the × WALSH1a × PNi. This is the base station radio signals transmitted. For user 1a received air signal. User 1a when the call is established in the pilot channel has been time and phase synchronization in the synchronization channel know call this sector PN offset PNi, in the Paging Channel know this sector to the user assigned walsh code WALSH1a. When the user 1a receives the air signal, the cell phone uses a PN code autocorrelation features, the same pilot when the time alignment since the associated normalized to 1, when the time is not aligned autocorrelation normalized -1 / L, respectively.  cell phone jammer  designs the shielding signal starting device controlled by the computer for these characteristics.