CDMAmultiple access interferencenear-far effectIn this paper the basic methods for reducing Multiple Access Interference (MAI) and combating the near-far effect in Direct-Sequence Code-Division Multiple-Access (DS-CDMA) mobile communication systems are presented. MAI and the near-far effect are ...
And according to the algorithm is near far-field transform theory to calculate the antenna far-field characteristics.───且根据该算法的近远场变换理论计算出了天线的远场特性。 In the applications, there are many problems, such as timing synchronization, near- far effect, and geometric dilution of...
a Study of Optical Orthogonal Codes with Capture Effect The purpose of our proposal is to solve the near-far problem by not using power control but selecting OOC. The optical CDMA system and code search ... T Tsujioka,H Sugiyama,M Murata - 《Ieice Technical Report Communication Systems》 被...
As it stands, Apple is expected to introduce the second-generation iPad in three variants and several different capacities. In addition to WiFi and GSM-based models targeted at AT&T and a broad range of European 3G providers, a CDMA version catering to Verizon and some Far East...
and a billion in thirty years. This goes far beyond Moore’s law (the shrinking of transistors on an integrated circuit, allowing us to double the price-performance of electronics each year). Electronics is just one example of many. As another example, it took us 14 years to sequence HIV...
Families of 2D arrays can be constructed where each array has perfect autocorrelation, and the cross-correlation between any pair of family members is optimally low. We exploit equivalent Hadamard matrices to construct many families of p p × p arr
在卫星定位系统中,远近效应是影响定位精度的重要因素之一。 In satellite position system,the near-far effect is one of the import;ant factors that influenced the position accu- rac...
A radio transmitter and/or receiver apparatus uses an antenna to transmit and/or receive propagating electromagnetic radio waves (far-field communication) at one or more frequencies. If an inductive element is used in the same apparatus it may have an adverse effect on the operation of the anten...
Apparatus including: an antenna configured for efficient far field communication at a first frequency; an inductive element including a plurality of series-connected coiled portions
Methods and apparatus of managing a communication system, wherein a decision regarding a level of activity at a first end is made based at least in part on the level of activity at the second end. In one embodiment, the energy level of a first-end audio signal is measured. The first en...