Code Selection Method in MC-CDMA
碩士 === 國立暨南國際大學 === 通訊工程研究所 === 94 === The paper illustrates that multiple access interference (MAI) can be reduced by re-ordering the spreading codes in multi-carrier code division multiple access (MC-CDMA) systems. An effective spreading code allocation procedure using simple least square (LS) cha...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2006
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| Online Access: | http://ndltd.ncl.edu.tw/handle/10018568542172702235 |
| Summary: | 碩士 === 國立暨南國際大學 === 通訊工程研究所 === 94 === The paper illustrates that multiple access interference (MAI) can be reduced by re-ordering the spreading codes in multi-carrier code division multiple access (MC-CDMA) systems. An effective spreading code allocation procedure using simple least square (LS) channel estimation is presented to reduce the MAI in downlink MC-CDMA systems. Moreover, the spreading codes chosen by the method are in a consistent sequence. Using this presented code selection method, the system capacity of MC-CDMA can be effectively increased without increasing the system complexity. Simulation results show that the presented method can work well for both time-invariant and fading channels.
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