Journal of Applied Sciences ›› 2014, Vol. 32 ›› Issue (6): 551-558.doi: 10.3969/j.issn.0255-8297.2014.06.001

• Communication Engineering • Previous Articles     Next Articles

Outage Probability and Ergodic Capacity of Deep Space Communication with Relay Forwarding and Multiple Antenna Reception

CHEN Xue-qiang, WANG Cheng-hua, ZHANG Xiao-fei, CHEN Xiao-ming, ZHU Qiu-ming   

  1. 1. Key Laboratory of Radar Imaging and Microwave Photonics, Nanjing University of
    Aeronautics and Astronautics, Nanjing 210016, China
    2. College of Electronic and Information Engineering, Nanjing University of
    Aeronautics and Astronautics, Nanjing 210016, China
  • Received:2014-06-07 Revised:2014-10-03 Online:2014-11-28 Published:2014-10-03

Abstract:  Multiple antenna reception combined with relay forwarding is an effective way to overcome problems
of large link loss, path delay and frequent interruption in a deep space communication system (DSCS). Outage
probability and ergodic capacity are important performance indexes in DSCS. To the authors’ knowledge,
performance of DSCS with multiple antenna reception and relay forwarding has not been reported. This paper
analyzes outage probability and ergodic channel capacity for DSCS with multiple antenna reception and relay
forwarding. Considering the characteristics of DSCS environment, we use independent non-identical (i.n.i.)
Rayleigh distribution as a fading model for each branch channel including source-relay and relay-destination
channels. Exact SNR expressions for a single source-relay-destination branch are derived. Based on the i.n.i.
Rayleigh model, the probability density function of the received SNR in each branch channel is given. For large
distances between receiving antennas, a selection combing strategy is used at the receiving end. A closed form
expression of system outage probability and an approximate expression of system ergodic channel capacity are
derived. Simulation shows validity of the theoretical analysis.

Key words: deep space communication, multiple antenna reception, relay forwarding, outage probability, ergodic capacity

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