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An Enhanced CDMA-BLAST System Employed Scrambling Codes |
Feng Xing-le; Zhu Shi-hua; Wu Lin-jun |
Dept of Info. and Comm.,Xi’an Jiaotong University Xi’an 710049 China |
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Abstract A novel CDMA BLAST space-time code technique is proposed in this paper for the down link in a cellular CDMA system. Scrambling codes and orthogonal spreading codes are employed to identify different transmit antennas and different users, respectively. Due to good auto- and cross-correlation proprieties of the scrambling codes, the proposed scheme can obtain considerable improvement in the bit error rate performance without sacrifice of the precious orthogonal code resources.
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Received: 05 August 2003
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