Mobile communication apparatus with antenna array and mobile communication method thereof
A technology for mobile communication equipment and antennas, which is applied to communication between multiple stations, antennas, diversity/multi-antenna systems, etc., and can solve problems such as inability to guarantee efficiency
Inactive Publication Date: 2002-12-25
SAMSUNG ELECTRONICS CO LTD
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Problems solved by technology
However, since T×AA modes 1 and 2 are limited to assuming that the two spatio-temporal channels per antenna are independent, the efficiency cannot be guaranteed when the number of antennas and spatio-temporal channel characteristics vary
Also, T×AA Modes 1 and 2 have not been used in cases where more than two antennas are used
Method used
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Embodiment 502B
[0191] Figure 31 is description Figure 22 According to another embodiment 502B of the present invention in step 502, it is the same as Figure 24 Step 602 in is related. Embodiment 502B involves calculating weights using long-term information and coefficients, extracting coefficients based on the recovered short-term information and determining long-term information (steps 710 to 714).
[0192] In particular, to implement Figure 22 step 502, Figure 27 The third weight extraction unit 640 first recovers the short-term information from the feedback signal received via the antenna array 536 (step 710). After step 710, from the tables (each table has valid basis vector V by index 1 ~ coefficient and use long-term information (beam number N B and / or mode signal Mode) predetermined) to extract corresponding short-term information and long-term information (beam number N B and / or mode signal Mode) (in Figure 22 determined in step 500 of ) (step 712). Following step 71...
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A mobile communication device with an antenna array and a mobile communication method thereof. Mobile communication equipment includes: a base station with an antenna array and a mobile station, wherein the mobile station uses the signal sent by the base station to determine the channel downlink characteristics of each antenna, and uses the channel downlink characteristics according to the correlation between the characteristics of each antenna channel The long-term information and short-term information are determined at a high degree, the determined long-term information and short-term information are converted into feedback signals and sent to the base station, the base station receives the feedback signal, and extracts multiple weights from the long-term information and short-term information recovered from the received feedback signal. , multiply the multiplexed dedicated physical channel signal by weight, add the pilot channel signal and the product, and send the addition result to the mobile station through the antenna array. Therefore, even if the number of antennas of the antenna array increases, the performance degradation caused by the acceleration of the moving speed of the mobile station can be reduced by improving the reception signal-to-noise ratio required by the mobile station.
Description
technical field [0001] The invention relates to mobile communication, in particular to a mobile communication device with an antenna array and a mobile communication method thereof which can minimize the effects of fading, interference and noise. Background technique [0002] The next-generation mobile communication system requires high-speed data transmission faster than the mobile communication system for personal communication services. As a wireless communication standard, a wideband code division multiple access (W-CDMA) scheme is adopted in Europe or Japan, and a CDMA-2000 scheme is adopted in North America. [0003] A mobile communication system generally consists of a base station and a plurality of mobile stations communicating with each other through the base station. High-speed data transmission in a mobile communication system can be achieved by minimizing user mutual interference and signal loss such as fading affected by channel character...
Claims
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IPC IPC(8): H01Q3/26H04B7/06H04B7/26
CPCH04B7/0617H04B7/0634H04B7/0647H04B7/065
Inventor 金成珍李周镐李钟赫李镕锡金基镐李炫又
Owner SAMSUNG ELECTRONICS CO LTD