By Jiangzhou Wang, Tung-Sang Ng
Provide you with in-depth wisdom of some of the technical regimes for enforcing 3rd iteration (3G) instant cellular communications platforms, and covers the overdue more desirable thoughts prone to turn into destiny criteria in 3.5G or 3GPP2. quintessential reference for practising execs and scholars.
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Extra info for Advances in 3G Enhanced Technologies for Wireless Communications
We set the SHO threshold to 3 dB. The difference in the measured average received signal powers from the two BSs was approximately 1 dB. Thus, the measurement course is an SHO area within the prescribed threshold. The power delay profiles with 1 (2) and 2 (1) paths were observed in the first half and the latter half of the course from BS 1 (BS 2). We set TSEL = 10 ms. In the experiments, fast TPC was used only in the reverse link. The received signal power was set to be sufficiently high so that there was no TPC command bit error.
The test course first experienced clear two-path and single-path fading at the middle of the course. Then, three-path fading with unequal average power was observed at the end of the course. 17 Average BER as a function of target E b /I 0 per antenna for field experiments. user with a 64-Kbps data rate assuming the same BER independently employing fast TPC), as a function of the TPC target E b /I 0 value. ) Two MSs established radio links with BS 1. A WMSA channel estimation filter with J = 2 was used.
First Step The MS first calculates the correlation between the received sampled chip data sequence (actually an oversampled chip data sequence) and a PSC replica using the PSC-matched filter in order to detect the P-SCH time position. 8) 0 Then, let 1 ( , m , n ) be the value of 1 (t ) at t = + mTslot + nTframe . The matched filter output was averaged over period T1 (= N 1 Tframe ) to decrease the influence of fading variations and the impact of interference and background noise. 9), we regard the time at which the maximum average correlation of ⌿1 (t ) is obtained as the received timing of the primary SCH of the target cell, that is, max ⌿1 ( ) ⇒ ˆ .