IIR array processing based fast adaptive null steering algorithm using shift-invariant subarrays
This paper presents and investigates a fast adaptive null steering system employing infinite impulse response (IIR) array processing. The new algorithm is of considerable interest in communications where the desired signal is weak compared with the interfering signals or where the desired signal can...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/97839 http://hdl.handle.net/10220/12055 |
| _version_ | 1826113703085342720 |
|---|---|
| author | Ser, Wee Leng, S. |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Ser, Wee Leng, S. |
| author_sort | Ser, Wee |
| collection | NTU |
| description | This paper presents and investigates a fast adaptive null steering system employing infinite impulse response (IIR) array processing. The new algorithm is of considerable interest in communications where the desired signal is weak compared with the interfering signals or where the desired signal can be easily separated out. With the proposed algorithm, the nulls of the array system are repetitively updated one by one in a cyclical manner through a sequence of adjustment cycles. In each adjustment cycle, a particular null is updated by using the least mean square (LMS) algorithm and the update of each particular null will not affect other null positions. The proposed method is very effective and useful in the sense that it will result in a nearly flat gain in the antenna pattern, except zero gains at the null directions. Moreover, as will be demonstrated later from both analysis and simulation results, the convergence behavior of the new algorithm is significantly faster than the linearly constrained minimum variance (LCMV) method and is almost independent of the external noise environment. |
| first_indexed | 2024-10-01T03:27:34Z |
| format | Journal Article |
| id | ntu-10356/97839 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:27:34Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/978392020-03-07T14:02:44Z IIR array processing based fast adaptive null steering algorithm using shift-invariant subarrays Ser, Wee Leng, S. School of Electrical and Electronic Engineering Centre for Signal Processing DRNTU::Engineering::Electrical and electronic engineering This paper presents and investigates a fast adaptive null steering system employing infinite impulse response (IIR) array processing. The new algorithm is of considerable interest in communications where the desired signal is weak compared with the interfering signals or where the desired signal can be easily separated out. With the proposed algorithm, the nulls of the array system are repetitively updated one by one in a cyclical manner through a sequence of adjustment cycles. In each adjustment cycle, a particular null is updated by using the least mean square (LMS) algorithm and the update of each particular null will not affect other null positions. The proposed method is very effective and useful in the sense that it will result in a nearly flat gain in the antenna pattern, except zero gains at the null directions. Moreover, as will be demonstrated later from both analysis and simulation results, the convergence behavior of the new algorithm is significantly faster than the linearly constrained minimum variance (LCMV) method and is almost independent of the external noise environment. 2013-07-23T04:26:57Z 2019-12-06T19:47:16Z 2013-07-23T04:26:57Z 2019-12-06T19:47:16Z 2012 2012 Journal Article Leng, S., & Ser, W. (2012). IIR array processing based fast adaptive null steering algorithm using shift-invariant subarrays. Signal Processing, 92(9), 2116-2125. 0165-1684 https://hdl.handle.net/10356/97839 http://hdl.handle.net/10220/12055 10.1016/j.sigpro.2012.01.024 en Signal processing © 2012 Elsevier B.V. |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering Ser, Wee Leng, S. IIR array processing based fast adaptive null steering algorithm using shift-invariant subarrays |
| title | IIR array processing based fast adaptive null steering algorithm using shift-invariant subarrays |
| title_full | IIR array processing based fast adaptive null steering algorithm using shift-invariant subarrays |
| title_fullStr | IIR array processing based fast adaptive null steering algorithm using shift-invariant subarrays |
| title_full_unstemmed | IIR array processing based fast adaptive null steering algorithm using shift-invariant subarrays |
| title_short | IIR array processing based fast adaptive null steering algorithm using shift-invariant subarrays |
| title_sort | iir array processing based fast adaptive null steering algorithm using shift invariant subarrays |
| topic | DRNTU::Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/97839 http://hdl.handle.net/10220/12055 |
| work_keys_str_mv | AT serwee iirarrayprocessingbasedfastadaptivenullsteeringalgorithmusingshiftinvariantsubarrays AT lengs iirarrayprocessingbasedfastadaptivenullsteeringalgorithmusingshiftinvariantsubarrays |