Wireless receiver designs for asymmetric constellations.
Published: 2004
Language: eng
Number of pages: 92
Description: Four ASC CDMA receiver configurations composed of combinations of decorrelator/linear minimum mean square error (LMMSE) front-end filters; and Kalman filter (KF)-Maximum likelihood (ML) (KF/ML)/Wiener smoother-ML (WS/ML) joint channel estimator/data detector (CE/DD) are studied. Comparisons are made between ASCs and pilot symbols to test for similarities in their performance.The method of asymmetric signal constellations (ASC) to break isometry is studied in narrowband single-user superimposed systems and wideband code-division multiple access (CDMA) systems. Direct application of the ASC method to the superimposed framework led to a bit error floor, which motivates the proposal of three transceiver designs to solve this problem. Of all the ASC solutions, the generalized orthogonal code superimposed ASC (GOS-ASC) scheme show the best performance that matches those of a time-division multiplexed (TDM) ASC scheme.
Notes: Advisers:  Kostas N. Plataniotis; Subbarayan Pasupathy.

Thesis (M.A.Sc.)--University of Toronto, 2004.

Electronic version licensed for access by U. of T. users.

Source: Masters Abstracts International, Volume: 43-03, page: 0942.

MICR copy on microfiche (2 microfiches).