TY - GEN
T1 - New orthogonal binary user codes for multiuser spread spectrum communications
AU - Poluri, Radha
AU - Akansu, Ali N.
PY - 2005
Y1 - 2005
N2 - Walsh codes are perfectly orthogonal binary (antipodal) block codes that found many popular applications over many decades including synchronous multi-user communications. It is well known that they perform poorly for asynchronous multi-user communications. Therefore, the Gold codes are the preferred user codes in asynchronous CDMA communications. In this paper, new sets of binary orthogonal user codes are introduced for asynchronous spread spectrum multi-user communications. It is shown in this paper that the proposed binary user code family outperforms the Walsh codes significantly and they match in performance with the popular, nearly orthogonal Gold codes closely for asynchronous multi-user communications. We present that there are a good number of such independent code sets of different sizes available in the binary space. They might help us to increase service/multi-service capabilities of future communications systems.
AB - Walsh codes are perfectly orthogonal binary (antipodal) block codes that found many popular applications over many decades including synchronous multi-user communications. It is well known that they perform poorly for asynchronous multi-user communications. Therefore, the Gold codes are the preferred user codes in asynchronous CDMA communications. In this paper, new sets of binary orthogonal user codes are introduced for asynchronous spread spectrum multi-user communications. It is shown in this paper that the proposed binary user code family outperforms the Walsh codes significantly and they match in performance with the popular, nearly orthogonal Gold codes closely for asynchronous multi-user communications. We present that there are a good number of such independent code sets of different sizes available in the binary space. They might help us to increase service/multi-service capabilities of future communications systems.
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M3 - Conference contribution
AN - SCOPUS:84863639127
SN - 1604238216
SN - 9781604238211
T3 - 13th European Signal Processing Conference, EUSIPCO 2005
SP - 2462
EP - 2465
BT - 13th European Signal Processing Conference, EUSIPCO 2005
T2 - 13th European Signal Processing Conference, EUSIPCO 2005
Y2 - 4 September 2005 through 8 September 2005
ER -