Minimum BER Receiver Filters with Block Memory for Uplink DS-CDMA Systems
The problem of synchronous multiuser receiver design in the case of direct-sequence single-antenna code division multiple access (DS-CDMA) uplink networks is studied over frequency selective fading channels. An exact expression for the bit error rate (BER) is derived in the case of BPSK signaling....
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2008-05-01
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| Series: | EURASIP Journal on Wireless Communications and Networking |
| Online Access: | http://dx.doi.org/10.1155/2008/462710 |
| _version_ | 1818146168739201024 |
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| author | Mérouane Debbah Are Hjørungnes |
| author_facet | Mérouane Debbah Are Hjørungnes |
| author_sort | Mérouane Debbah |
| collection | DOAJ |
| description | The problem of synchronous multiuser receiver design in the case of direct-sequence single-antenna code division multiple access (DS-CDMA) uplink networks is studied over frequency selective fading channels. An exact expression for the bit error rate (BER) is derived in the case of BPSK signaling. Moreover, an algorithm is proposed for finding the finite impulse response (FIR) receiver filters with block memory such that the exact BER of the active users is minimized. Several properties of the minimum BER FIR filters with block memory are identified. The algorithm performance is found for scenarios with different channel qualities, spreading code lengths, receiver block memory size, near-far effects, and channel mismatch. For the BPSK constellation, the proposed FIR receiver structure with block memory has significant better BER with respect to Eb/N0 and near-far resistance than the corresponding minimum mean square error (MMSE) filters with block memory. |
| first_indexed | 2024-12-11T12:15:04Z |
| format | Article |
| id | doaj.art-82946a246f0747e4be83bf852fb1da79 |
| institution | Directory Open Access Journal |
| issn | 1687-1472 1687-1499 |
| language | English |
| last_indexed | 2024-12-11T12:15:04Z |
| publishDate | 2008-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Wireless Communications and Networking |
| spelling | doaj.art-82946a246f0747e4be83bf852fb1da792022-12-22T01:07:40ZengSpringerOpenEURASIP Journal on Wireless Communications and Networking1687-14721687-14992008-05-01200810.1155/2008/462710Minimum BER Receiver Filters with Block Memory for Uplink DS-CDMA SystemsMérouane DebbahAre HjørungnesThe problem of synchronous multiuser receiver design in the case of direct-sequence single-antenna code division multiple access (DS-CDMA) uplink networks is studied over frequency selective fading channels. An exact expression for the bit error rate (BER) is derived in the case of BPSK signaling. Moreover, an algorithm is proposed for finding the finite impulse response (FIR) receiver filters with block memory such that the exact BER of the active users is minimized. Several properties of the minimum BER FIR filters with block memory are identified. The algorithm performance is found for scenarios with different channel qualities, spreading code lengths, receiver block memory size, near-far effects, and channel mismatch. For the BPSK constellation, the proposed FIR receiver structure with block memory has significant better BER with respect to Eb/N0 and near-far resistance than the corresponding minimum mean square error (MMSE) filters with block memory.http://dx.doi.org/10.1155/2008/462710 |
| spellingShingle | Mérouane Debbah Are Hjørungnes Minimum BER Receiver Filters with Block Memory for Uplink DS-CDMA Systems EURASIP Journal on Wireless Communications and Networking |
| title | Minimum BER Receiver Filters with Block Memory for Uplink DS-CDMA Systems |
| title_full | Minimum BER Receiver Filters with Block Memory for Uplink DS-CDMA Systems |
| title_fullStr | Minimum BER Receiver Filters with Block Memory for Uplink DS-CDMA Systems |
| title_full_unstemmed | Minimum BER Receiver Filters with Block Memory for Uplink DS-CDMA Systems |
| title_short | Minimum BER Receiver Filters with Block Memory for Uplink DS-CDMA Systems |
| title_sort | minimum ber receiver filters with block memory for uplink ds cdma systems |
| url | http://dx.doi.org/10.1155/2008/462710 |
| work_keys_str_mv | AT m233rouanedebbah minimumberreceiverfilterswithblockmemoryforuplinkdscdmasystems AT arehj248rungnes minimumberreceiverfilterswithblockmemoryforuplinkdscdmasystems |